Xerath: The Magus Ascendant

Xerath is a champion in League of Legends played in the Mid lane and Support, classified as an Artillery (Mage / Support). He uses Mana (400 – 832.63) and deals Magic damage. Xerath was released on October 5, 2011, and was last updated in patch V25.08. Store price: 675 Blue Essence / 585 RP.

📊 Base Statistics

💡 Artillery Classification — Pure Range Over Everything: Xerath is classified as Artillery — the rarest class in the game alongside Ziggs and Vel’Koz — meaning his entire design philosophy prioritizes maximum engagement range with zero mobility tools. Q at max charge reaches 1450 units, W reaches 1000 units with 0.528-second delay, E reaches 1125 units, R reaches 5000 units globally. For context, most mid laners have 600–900 range on their longest-range ability. Xerath’s tradeoff: 22 base armor (among the lowest in the game), 596 HP base, zero gap-close abilities, and zero CC immunity — if an enemy reaches Xerath, the fight is over. Every itemization and positioning decision must be made with the understanding that Xerath’s survival window at melee range is measured in seconds

⚡ Passive: Mana Surge

INNATE: Periodically, Xerath empowers his next basic attack on-hit to restore 30–225 mana (based on level). Against enemy champions, this is doubled to 60–450 mana. Mana Surge’s cooldown is reduced by 3.5 seconds per enemy killed. Does not trigger if Xerath would restore above maximum mana.

💡 Mana Surge — Self-Sustaining Mana Economy: At level 18, Mana Surge restores 225 mana per proc on minions, 450 on champions. Xerath’s max mana at level 18 is 832 — a single Mana Surge proc on a champion at level 18 restores 54% of his maximum mana in one auto attack. In practice this means: Xerath needs to auto-attack one champion per fight (or minion every 16 seconds) to maintain mana over extended poke games. Combined with mana-efficient ability usage: Q refunds half mana when cancelled, R refunds half CD when unused — Xerath is designed to be mana-sustainable despite high individual ability costs (80–120 mana per Q/W). The −3.5 seconds per kill makes Mana Surge cycle faster in fights with multiple kill opportunities, maintaining mana more efficiently as fights compound.

⚡ Q: Arcanopulse

ACTIVE: Xerath channels while being slowed 0–40% (based on channel time) for up to 3 seconds, increasing Arcanopulse’s range over the first 1.5–1.75 seconds from 700 to 1450. Arcanopulse can be recast within the duration (auto-cancels if charge completes or is interrupted, refunding half mana). Recast: Xerath becomes unable to act for 0.528 seconds then fires a beam dealing magic damage in a line.

💡 Q Range Scaling — The 1.5-Second Sweet Spot: Q’s range increases from 700 to 1450 over the first 1.5–1.75 seconds of channel — after that point, range is already at maximum but Xerath is still channeling (and still being slowed 40%). The optimal Q pattern: channel for exactly 1.5 seconds → recast = maximum 1450 range with minimum exposure time at maximum slow. Channeling beyond 1.75 seconds does not extend range further, only extends the 40% slow vulnerability window. Against moving targets: slightly shorter channels (1–1.2 seconds) fire at 1100–1250 range — still far beyond most champions‘ abilities — while reducing the 0.528-second locked recast animation relative to how far the target has moved. Master Xerath players pre-aim the recast direction, channel 1.5 seconds, and fire instantly at max range without extending into the 3-second cap.

💫 W: Eye of Destruction

ACTIVE: Xerath casts down a blast of arcane energy that strikes the target location after 0.528 seconds, briefly granting sight of the area and dealing magic damage to enemies hit, slowing them by 25% for 2.5 seconds. Enemies in the epicenter take 66.7% increased damage and are slowed by a greater amount, decaying to 25% over the duration

💡 W Epicenter — The Precision Landing Zone: The epicenter (125-radius inner zone) vs. outer zone (275-radius) damage difference: outer zone = 190 + 65% AP at max rank, epicenter = 316.73 + 108.355% AP — the epicenter deals 66.7% more damage and applies 80% slow (decaying) vs. 25% outer slow. At 600 AP: outer zone = 190 + 390 = 580 magic. Epicenter = 316.73 + 650 = 966 magic damage — 66% more damage from hitting the center. The 0.528-second delay is the enemy’s window to step out of the 275-radius outer zone or the 125-radius epicenter. Against a Q-slowed target (40% slow): at 335 MS × 60% = 201 MS during Q slow, in 0.528 seconds the target moves ~106 units — less than the 125-radius epicenter. A Q-slowed target who is in the epicenter when W is cast cannot escape the epicenter during the 0.528-second delay, guaranteeing the 316.73 + 108.355% AP hit. Q → W epicenter on a slowed target is Xerath’s highest single-rotation damage window.

🔵 E: Shocking Orb

ACTIVE: Xerath fires an orb of energy in the target direction dealing magic damage to the first enemy hit and stunning them for 0.75–2.25 seconds based on orb travel distance

💡 E Distance-Based Stun — Maximum Range = 3× the Minimum Stun: Shocking Orb’s stun scales from 0.75 seconds at point-blank to 2.25 seconds at full 1125-unit travel distance. The stun duration increases linearly with distance: at 375 units traveled = ~1 second stun, at 750 units = ~1.75 seconds, at 1125 units = 2.25 seconds. Always fire E from as far back as possible for maximum stun duration. Against an enemy at 800 units from Xerath: ~1.85 seconds of stun. Against an enemy approaching from 1125 units: 2.25 seconds. At 600 AP: E deals 190 + 270 = 460 magic damage with a 2.25-second stun at max range — Xerath can fire Q (fully charged at 1450 range), W epicenter (at 1000 range), and auto attack during a 2.25-second stun window. The speed (1400) and 120-width make close-range E misses more forgivable as the short distance reduces the stun penalty.

☄️ R: Rite of the Arcane

ACTIVE: Xerath channels for up to 10 seconds, gaining the ability to recast Rite of the Arcane up to 4–6 times after 0.5 seconds within the duration. If R ends without any recasts used, half the cooldown is refunded

RECAST — ARCANE BARRAGE: Xerath catapults an arcane missile striking the target after 0.627 seconds delay, dealing magic damage and briefly granting sight. Each cast has a 0.5-second static cooldown. After catapulting the first missile, Xerath reveals himself while there are enemy champions within R range. Hitting at least one enemy champion grants Arcane Perfection stack, stacking up to maximum. Each stack increases Arcane Barrage’s damage

💡 R Arcane Perfection — Stacking Missile Damage: Each champion hit by Arcane Barrage during R grants 1 Arcane Perfection stack (max 3–5 at R1–3). Each stack increases subsequent Arcane Barrage damage by 20–30 + 5% AP. At R3 with 600 AP (5 max stacks): base damage = 270 + 270 = 540 per missile. After 5 champion hits: 540 + (5 × 30 + 5 × 30) = 540 + 300 bonus damage = 840 magic damage per missile at max stacks. With 6 total missiles at R3 (maximum recasts), hitting all 6 on champions: the 6th missile deals 840 vs. the 1st missile’s 540. Total maximum R damage at R3 with 600 AP and all 6 missiles hitting: approximately 4000+ magic damage against a single target across the channel. The 0.5-second delay before recast availability means Xerath must wait between each missile cast — no burst-firing all 6 in sequence.

💡 R Unused = Half CD Refund — The Safe Scouting Tool: R activated but no missiles fired = half CD refunded. At R3: 100-second base CD. Activating R for vision scouting without firing any missiles refunds 50 seconds → effective 50-second cooldown for the scouting vision. This converts R into a global vision tool with a 50-second cooldown rather than wasting the full 100 seconds. The 5000-range target zone provides sight of the area briefly on missile impact — even against terrain where no enemy is present, the impact vision briefly reveals brush or fog of war. The self-reveal mechanic (Xerath revealed while enemies are within range after first missile) means stealth-scouting via R without firing missiles provides information without revealing position.

🎯 Strategies and Gameplay Tips

Early Game (Levels 1–6)

• Q Level 1–2 Poke — Establish Range Control: Arcanopulse at level 1 fires at 700–1450 range for 75 + 90% AP damage — against a melee champion who has 125 melee range, firing Q at 1000+ range means zero retaliation risk. Establish early level 1–2 Q poke patterns: channel 1.5 seconds → fire at 1000+ range → retreat 50–100 units laterally during the 0.528-second recast lock. Against ranged mid laners who can poke back at 550–700 range: channel Q to 1200+ range before firing to guarantee Xerath’s poke lands beyond their counterpoking range. Level 1–2 Q has a 9-second CD at rank 1 — poke approximately every 9 seconds when it’s safe to channel 1.5 seconds without being engaged on.
• Mana Surge on Minions for Mana Sustain: Auto-attack minions every 16 seconds specifically to trigger Mana Surge (30–225 mana restoration based on level). At level 6: Mana Surge restores approximately 90 mana per proc. With Xerath’s mana pool at approximately 590 by level 6, one Mana Surge proc every 16 seconds restores 15% of max mana passively — sufficient to offset 1–2 Q or W casts per minute without consuming mana items. The −3.5 seconds per kill means farming minions in lane compress Mana Surge CD throughout a wave — 6 minion kills in one wave shave 21 seconds off Mana Surge’s 16-second base CD, enabling more frequent procs against a champion during the wave fight window.
• E Toward River for Ganks: E’s 1125 range and 1400 speed fire down the lane toward approaching enemies. Against a jungler approaching from the river (visible at ~700–800 units): E at full 1125 range toward them = 2.25-second stun on a gank that hasn’t even reached lane yet. The stun at full range gives Xerath’s own jungler time to respond, and Xerath can fire W into the stunned jungler (epicenter-targeted since they’re stationary for 2.25 seconds) followed by Q for significant burst against an enemy who came to gank.

Mid Game (Levels 7–13)

• The Q → W Epicenter Combo on a Slowed Target: Against a stationary or Q-slowed target: Q channel 1.5 seconds (target at 800–1100 range) → Q fires (applies 0% slow at start, increasing to 40% by full channel) → W placed at epicenter of slowed target’s current position → W delay 0.528 seconds while target moves ~100 units at reduced MS. At 600 AP: Q = 235 + 211 = 446 magic damage. W epicenter = 316.73 + 650 = 966 magic. Total: ~1412 magic damage from Q → W epicenter at max rank with 600 AP. Against a carry with 1500 effective HP, this combo represents ~94% of their HP in pure magic damage from beyond their attack range.
• E → W Epicenter on Stunned Target: Full 2.25-second E stun at max range makes W epicenter landing trivial — fire E → immediately place W on stunned target’s exact position. The target cannot move for 2.25 seconds; W lands after 0.528 seconds during the stun. During the remaining 1.72 seconds of stun: Q fires from 1450 range. The E → W epicenter → Q during stun represents Xerath’s maximum single-rotation damage against a stationary target. At 600 AP: E = 190 + 270 = 460 + W epicenter 966 + Q 446 = ~1872 magic damage in under 3 seconds from 1000–1450 range against a target who cannot react.
• R for Early Skirmishes Across the Map: Rite of the Arcane’s 5000-range coverage enables Xerath to participate in fights on the opposite side of the map from mid lane. Against a bot lane skirmish at Dragon while Xerath pushes mid: R → fire 4–6 missiles into the fight. Each missile stacks Arcane Perfection — a 270 + 45% AP missile at R3 with 600 AP = 540 base damage × (stacked to 840 at max perfection). Two missiles hitting carries in a 2v2 bot fight can swing the fight entirely without Xerath moving from mid lane. The 0.627-second delay per missile requires leading target positions since fights are dynamic — fire R missiles at the predicted position of the retreating carry, not their current position.

Late Game (Level 14+)

• R Global Execution and Objective Deny: At R3 (100-second CD with half-refund if unused), R fires 6 missiles at 5000 range. The stacked Arcane Perfection on missile 5–6 (840 magic damage at 600 AP) executes wounded champions fleeing from teamfights across the map. A carry at 30% HP retreating after a teamfight on the other side of Summoner’s Rift is within Xerath’s R range — two well-aimed R missiles represent potentially 1680 magic damage that arrives regardless of the target’s escape tools. Alternatively, R fired at the enemy jungler’s position during Baron contest deals AoE 200-radius damage — a 540-magic hit on 3 clustered enemies contesting Baron is 1620 magic damage to the contesting team without Xerath being present.
• Teamfight Positioning at Extreme Backline: Xerath’s 22 base armor and lack of defensive tools require positioning at the maximum engagement distance behind allies during teamfights. Against compositions with dashes: stand 2+ ability ranges behind the frontline — Q at 1450 range fired from 500 units behind your team means 1950 units from the enemy front. Against non-dash compositions: stand at whatever distance maintains Q full-charge range without being in W or skillshot reach. Xerath played correctly is mechanically unkillable in teamfights — not because he’s tanky, but because he physically cannot be reached at proper positioning distance.
• Arcane Perfection Stack Building During R: The first R missile reveals Xerath while enemies are in range — subsequent missiles fire into a fight where Xerath knows enemy positions from reveal. Aim first missile at the largest cluster for guaranteed champion hit (first hit = first Arcane Perfection stack). Subsequent missiles: target the highest-HP champion each time for maximum stack value on the highest-priority target. By missile 5–6, Xerath is firing at 540 + (5 stacks × 30 + 5% AP per stack) = 840 magic damage at the enemy carry who has been taking stacking hits throughout the R duration.

❌ Common Mistakes and How to Avoid Them

• Channeling Q Past 1.75 Seconds: Q reaches maximum 1450 range at 1.5–1.75 seconds. Continuing the channel past 1.75 seconds doesn’t extend range further — it only maintains the 40% self-slow vulnerability window without benefit. Fire Q at exactly 1.5–1.75 seconds unless actively using the continued channel to draw the enemy forward into a W trap. The 3-second maximum channel is a trap: it provides zero additional range after 1.75 seconds while tripling the time Xerath is slowed and stationary (from 1.75s to 3s = 1.25 additional seconds of 40% slow exposure).
• W on Outer Zone Instead of Epicenter: Placing W at the target’s current position rather than where they will be after the 0.528-second delay causes consistent outer zone hits instead of epicenter hits. Against a walking target at 335 MS: in 0.528 seconds they move ~177 units. Place W 177 units ahead of their current position in the direction they’re walking. Against a Q-slowed target (40% slow): they move ~100 units. Place W 100 units ahead. Epicenter hits deal 66.7% more damage — consistently hitting outer zone instead of epicenter represents approximately 35% less W damage across all casts
• Firing E at Close Range: Shocking Orb stun at close range (200–300 units) = 0.75–1.0 seconds — the minimum benefit. The exact same E ability at 1000+ unit travel = 2.0–2.25 seconds stun. Reposition backward before firing E if the enemy is within 500 units. Sacrificing 300ms of repositioning time to add 1.25 seconds of additional stun duration transforms E from a brief interrupt into a reliable full-combo window. The habit: enemy approaches → step back to 700+ units → E fires at distance → 1.75+ seconds stun → full Q + W epicenter lands during stun.
• Using R Without Arcane Perfection Stacking Strategy: Firing all R missiles at different targets prevents Arcane Perfection from stacking on a single target — stacks reset between different targets. Focus all R missiles on one target to maximize stack damage unless the fight requires multi-target disruption. Against a single priority carry: 6 missiles on the same target stacks to 5 perfection = 840 magic per missile on missiles 5–6. Against 6 missiles split across 3 enemies: each receives 2 missiles at base 540 damage each = 1080 per enemy vs. 1 enemy receiving 540+540+570+570+570+840 = 3630 damage for focus fire — triple the damage on one target vs. spreading.
• Not Cancelling Q for Half Mana Refund: Q refunds half mana if cancelled before firing or if it expires unused — 40–60 mana back depending on rank. Against an approach from an enemy during Q channel (Xerath is being engaged on): cancel Q immediately to refund half mana rather than attempting to fire a short-range Q into a target who will instantly retaliate. A cancelled Q costs only 40–60 mana net instead of the full 80–120 mana. Then flash away or E to stun. The instinct to fire Q defensively at 700 range into a dashing assassin is worse than cancelling for mana refund and using E for the stun.

⚙️ Recommended Build and Itemization

Core Items

• Luden’s Tempest: Magic pen for all abilities against MR-building targets. Movement speed for repositioning between Q channels (Xerath’s only mobility is MS, making every MS point critical for repositioning between channels). Mana for sustaining the 80–120 mana per Q/W cast cycle. The burst passive on first ability hit of a fight triggers on E at 1125 range, adding damage during the stun window.
• Shadowflame: Flat magic pen for short-range trades where Xerath forces W epicenter on stationary targets. Shield-shredding vs. support shields (Lulu, Janna, Karma) protecting carries from Xerath’s long-range poke. AP scaling amplifies Q (90% AP), W epicenter (108.355% AP), and R stack scaling (5% AP per Arcane Perfection stack).
• Rabadon’s Deathcap: AP multiplier amplifying Q’s 90% AP, W epicenter’s 108.355% AP, and R’s 45% AP per missile (plus 5% AP per stack). At 400 AP pre-Rabadon’s: post-Rabadon’s ~520 AP. W epicenter damage increase: (520 − 400) × 108.355% = 130 additional magic damage per W epicenter purely from Rabadon’s AP multiplier. R’s 5 stacks at +5% AP each: 5 × 5% of 520 = 130 additional damage per missile from Arcane Perfection after Rabadon’s. Rabadon’s is the single item that most amplifies Xerath’s R stacking pattern.

Situational Items

• Void Staff: Percent magic pen for enemies who build significant MR against Xerath’s sustained poke. Against a 200 MR composition: Void Staff converts Q damage from 235 + AP at (100/300) mitigation = 33% effective to 235 + AP at (100/220) = 45% effective — 36% more Q damage through Void Staff. Essential against compositions that itemize specifically against Xerath’s magic damage.
• Zhonya’s Hourglass: 2.5-second stasis after R channel begins — Xerath activates R, fires 1–2 missiles, immediately Zhonya’s → stasis for 2.5 seconds while the previous missiles are in flight → exits stasis → fires remaining missiles. Against compositions that dive Xerath immediately after R is revealed: R reveals Xerath after first missile → Zhonya’s immediately → emerge from stasis and fire remaining missiles while the diving enemies cannot act during the stasis. The armor from Zhonya’s also partially addresses Xerath’s 22 base armor fragility.
• Shard of True Ice (Support Item): When playing Support Xerath: provides mana sustain to supplement Mana Surge, slowing active on Q auto-empowered autos, and gold generation for item completion. Support Xerath benefits from the same core ability kit at a reduced gold cost relative to mid lane investment — Q, W, E, R function identically regardless of item count, and Xerath’s zone-control utility in lane (1000-range W, 1125-range E stun) doesn’t require full AP investment to be impactful as a poke support.

⚔️ Counter Picks & Matchups

✅ Xerath Counters

1. Cassiopeia

Cassiopeia’s 850 Q range (Noxious Blast) falls 400 units short of Xerath’s Q maximum range of 1450. Xerath pokes Cassiopeia consistently from 1200+ range, outside Noxious Blast’s reach. Twin Fang’s 700 range requires Cassiopeia to position forward to capitalize on her poison — this forward positioning makes Cassiopeia a consistent E stun target at 1000+ unit distance. Petrifying Gaze (R) 820-range cone means Cassiopeia must reach Xerath to use her ultimate — the 2.25-second E stun from maximum range provides sufficient Xerath escape time (335 MS × 2.25s = 750 units of retreat = Cassiopeia can’t reach R range during E stun).

2. Viktor

Viktor’s 600-range Q and 550-range E beam place his abilities entirely within Xerath’s safe poke range. Xerath’s Q at 1000+ range pokes Viktor without entering Viktor’s W Gravity Field radius (800 range) or Q range. Viktor’s Arcane Storm (R) requires 700 range to land — Xerath positions beyond this threshold during teamfights. Pre-augment Viktor at 100 Hex Fragments is significantly weaker than max-ranked Xerath abilities, and Xerath’s poke pattern prevents Viktor from accumulating fragment income efficiently by forcing him away from CS.

3. Veigar

Veigar’s Event Horizon (E) cage 650 range requires him to be significantly closer than Xerath’s safe poke distance. Q poke at 1000–1450 range forces Veigar to take consistent damage without being able to respond with his 700-range Dark Matter (W) or initiate a cage. Against Veigar’s Primordial Burst (R) — while R is extremely damaging — it requires Veigar to be within 650 range for Event Horizon setup. Xerath’s E at 1125 range stuns Veigar before he reaches cage range, preventing the setup for the primary burst combo.

❌ Xerath is Countered By

1. Zed

Zed’s entire kit is designed to eliminate immobile mages — Living Shadow (W) + Shadow Slash (E) creates an unpredictable approach vector that Xerath’s Q channel self-slow makes him unable to dodge. Death Mark’s 3-second countdown is timed to expire during Xerath’s most vulnerable window — mid Q channel or during the 0.528-second recast lock. Xerath has no escapes: no dash, no blink, no CC immunity. E’s 2.25-second stun at max range does stop Zed mid-approach, but Zed’s Shadow can be recalled before CC lands, and the Shadow positioning ambiguity makes accurate E targeting against Zed specifically difficult.

2. Katarina

Shunpo (E) dash at 675 range arrives faster than Q’s 0.528-second recast lock can fire. Katarina’s dagger pick-up mechanics mean she’s in constant motion, making Q channel aim and W epicenter landing nearly impossible. Death Lotus (R) channel deals significant damage but Xerath’s E stun breaks it — however, reaching E range against a mobile Katarina who is already in Xerath’s face is difficult. Bouncing Blades (Q) daggers placed at E range create threat zones that force Xerath to reposition mid-Q-channel, breaking the channel entirely.

3. Talon

Rake (W) boomerang at 900 range hits Xerath within his Q channel window, and Assassin’s Path (E) wall-jumping ignores all Xerath’s terrain-dependent positioning. Noxian Diplomacy (Q) into wall-jump creates approach angles from non-obvious directions — Xerath’s 22 base armor absorbs Talon’s physical burst poorly. Shadow Assault (R) invisibility prevents E stun targeting (Xerath cannot aim E at an invisible target). Talon can eliminate Xerath in under 2 seconds from melee range, which Xerath has no toolkit response to — only correct positioning before Talon’s approach can be avoided.

FAQ

Q: What is the correct ability leveling order?

A: Max Q (Arcanopulse) first — the damage (75→235 + 90% AP) and cooldown reduction (9s→5s) are the highest priority rank-ups. CD reduction at max rank means Q fires every 5 seconds during sustained poke, dramatically increasing poke frequency. Max W (Eye of Destruction) second — the epicenter damage (83.35→316.73 + 108.355% AP), slow strength (60→80%), and cooldown (14s→10s) are more impactful than E’s rank-ups. Max E (Shocking Orb) last — stun duration is always distance-based (unchanged by rank), and the damage (70→190 + 45% AP) increases are lower priority than W’s epicenter damage scaling. R at 6, 11, 16.

Q: What happens if R ends without using any missiles?

A: Half of R’s cooldown is refunded — at R3 with a 100-second base cooldown, unused R refunds 50 seconds, leaving 50 seconds until the next R. This makes activating R for global vision scouting a legitimate low-cost option: enter R channel at objectives, use the 5000-range recast zone to briefly reveal terrain and approaches without firing, cancel R → only 50 seconds until next R. Using R purely for vision at critical map moments (Baron spawn, enemy jungle buff timer) costs 50 effective seconds of R CD rather than 100. The key: cancel before any missiles fire — firing even one missile forfeits the refund condition.

Q: Is Xerath viable as a Support?

A: Yes — Support Xerath is a legitimate pick. Q poke at 1450 range from a support position fires from behind the ADC’s position, allowing sustained poke from a protected backline. E’s 2.25-second stun at max range provides reliable engage setup for the ADC. W’s epicenter slow (80% at max rank) is a peel/engage tool depending on positioning. The primary difference: support Xerath builds support item + AP rather than full mid-lane AP, reducing per-ability damage. However, Xerath’s utility (zone control, global R, E stun) doesn’t require maximum AP to be impactful — the range and CC are fixed regardless of AP investment.

Q: How does the self-reveal in R work?

A: After Xerath fires his first Arcane Barrage missile, he is revealed to enemies for as long as enemy champions are within R’s 5000-unit range. This means: firing the first missile reveals Xerath’s position. Against enemies who have the information of Xerath’s location, they can move to Xerath’s map position. The invisibility/ward removal of R trades Xerath’s stealth for the information + damage from R. If no enemy champions are within 5000 range, Xerath reveals himself briefly when a missile impacts within 175–225 units of any enemy unit (not champions). The reveal mechanic incentivizes firing R missiles in rapid succession after reveal rather than slow-firing — once revealed, the clock starts on enemy champions moving toward Xerath’s position.

Q: Can Xerath miss all Q charges and still get mana back?A: Yes — if Q is interrupted by CC or Xerath manually cancels Q before recast, OR if Q’s full 3-second channel completes without recast, the ability is cancelled and half the mana cost is refunded (40–60 mana depending on rank). This is explicitly designed to reduce Xerath’s mana punishment for missed channels in situations where the channel must be abandoned. When ganked mid-channel: cancel Q immediately for the partial refund rather than firing desperately at short range (which both misses likely and doesn’t refund mana). The refund conditions are cancellation OR expiry — the full mana cost is only paid when the recast fires the beam.