Serylda’s Grudge

What is Serylda’s Grudge? 🗡️

Serylda’s Grudge is a legendary Assassin item in League of Legends, categorized under Assassin, Attack Damage, Armor Penetration, and Ability Haste. It occupies a specific hybrid role: the 35% armor penetration addresses tanky, high-armor targets, while the BITTER COLD slow gives ability-damage dealers a chase and kiting tool that activates precisely in the low-HP fight window.

The item is classified as a FATALITY item — meaning it shares a slot category with other FATALITY items like Lord Dominik’s Regards, Mortal Reminder, and Black Cleaver. You can only hold one FATALITY item per champion at any time. This forces a direct choice between Serylda’s and its FATALITY category peers based on the specific defensive profile of the enemy team.

Available on SR 5v5, ARAM, Nexus Blitz, and Arena. Sell price: 2,100 Gold.

📊 Base Statistics & Cost

🔨 Recipe & Components

Serylda’s Grudge builds from two components that split between AD + ability haste and pure AD — covering two distinct back timings:

❄️ Passive Mechanic: BITTER COLD

BITTER COLD triggers a 30% slow for 1 second whenever you deal ability damage to an enemy who is at or below 50% of their maximum health. Unlike CINDERBLOOM (Shadowflame) which triggers below 40%, BITTER COLD activates at the 50% threshold — a wider window that activates earlier in the fight.

Critical mechanic — DoT interaction: BITTER COLD is continuously reapplied by every tick of damage over time effects. If an ability deals DoT damage, each individual tick that hits a target at or below 50% HP reapplies the slow independently — causing the 30% slow to persist for the entire duration of the DoT plus 1 second after the last tick. This is a significant interaction for DoT-heavy AD assassins and skirmishers.

BITTER COLD Trigger Conditions — Full Breakdown

DoT Interaction — The Extended Slow Window

The DoT reapplication mechanic is BITTER COLD’s most powerful and least understood interaction. When an ability applies damage over time to a target who is at or below 50% HP, every tick of that DoT reapplies the 30% slow independently. This means:

• Short DoTs (2-3 ticks): the target is effectively slowed for the DoT’s full duration plus 1 second — practically 2-4 seconds of continuous slow from a single ability cast
• Long DoTs (Singed poison, sustained bleed effects): the slow persists for the entire duration of the effect — potentially 4-6+ seconds of uninterrupted slow
• Multi-ability DoTs: if multiple DoT abilities stack on the same target, each one independently reapplies the slow — maintaining it across overlapping tick windows

🏟️ Arena Mode — Map-Specific Differences

Arena reduces the base AD and ability haste slightly, but increases armor penetration from 35% to 40%. In Arena’s condensed combat where players frequently have higher armor values from augments and item synergies, the 40% armor pen delivers proportionally more damage than the SR version. The BITTER COLD slow mechanic remains unchanged across modes — same 50% threshold, same DoT interaction.

⚔️ FATALITY Item Category — Understanding the Slot Choice

Serylda’s Grudge occupies the FATALITY item slot — a category that limits champions to one item from within the group. Understanding what each FATALITY item does and when to choose each is fundamental to Serylda’s decision-making:

🎯 Best Champions for Serylda’s Grudge

Serylda’s Grudge is ideal for ability-damage dealers who need to deal with armored targets AND who benefit from slowing enemies below 50% HP — whether to chase them down, prevent escape after a dive, or maintain kite distance. The 50% threshold is generous enough to activate in most extended fight scenarios.

✅ Ideal Picks

• Zed — His Living Shadow (W) and Shadow Slash (E) both deal ability damage in rapid succession. Against armored targets, the 35% pen makes his shadow-hit combos substantially more damaging. BITTER COLD slows the target during his combo, preventing repositioning between shadow hits and making escaping Death Mark (R) significantly harder.
• Talon — Rake (W) deals multi-hit ability damage with a bleed. The bleed ticks reapply BITTER COLD continuously — creating an extended slow window that keeps targets in range for Noxian Diplomacy (Q) follow-up. The armor pen helps against support-bot lane matchups where supports stack early armor.
• Kha’Zix — Void Spike (E) and evolved W Void Spike’s spread interact with BITTER COLD on every hit against isolated or grouped targets below 50%. His isolation mechanic benefits directly from the slow — an isolated, slowed target below 50% HP is his ideal execution scenario.
• Renekton — His Ruthless Predator (W) and Cull the Meek (Q) both deal ability damage. The armor penetration is valuable against tanky frontliners, and BITTER COLD keeps high-armor targets slowed during his empowered ability windows — critical for his stacked ability rotation damage.
• Jarvan IV — His abilities are ability-damage based, and his standard J4 R + E + Q combo puts him in a position where the slow from BITTER COLD keeps enemies inside his Cataclysm (R) arena rather than trying to escape the cage edges.
• Wukong — Nimbus Strike (E) and Crushing Blow (Q) both deal ability damage. Against tank matchups in the top lane or jungle, Serylda’s armor pen makes his Q True Grit (passive stacking) combo significantly more effective, and BITTER COLD prevents armor-stacking targets from simply walking away.
• Fiora — Her Lunge (Q) and Riposte (W) deal ability damage. The armor pen synergizes with her playstyle against armor-heavy frontliners, and BITTER COLD can be triggered through her Q resets to maintain a slow on targets she’s chasing across the map.

❌ Suboptimal Picks

• Auto-attack dominant champions (Tryndamere, Master Yi, Yasuo): BITTER COLD doesn’t trigger on basic attacks. The slow is a core part of Serylda’s value — buying it on an auto-attack champion means paying 3,000 gold for 45 AD, 15 ability haste, and 35% armor pen without the slow utility. Lord Dominik’s provides similar armor pen value without wasting the passive.
• AP mages — The 45 AD is entirely wasted on AP champions. Shadowflame or Void Staff cover the magic damage amplification role with actual AP and magic penetration.
• Champions against squishies-only compositions: The 35% armor pen is strongest against champions who actually build armor. Against a full-squishy enemy team (e.g. 5 AD carries or mages with no armor items), the armor pen returns minimal value — a pure AD item like Edge of Night or Axiom Arc may provide better overall output.

⚙️ Recommended Build Paths

Ability-Based Assassin Build (Zed / Talon)

1. Duskblade of Draktharr / Eclipse — First item — burst damage or shield-on-hit for the opening engage window
2. Serylda’s Grudge — Second item — armor pen for mid-game tanks + BITTER COLD to prevent post-combo escape
3. Edge of Night — Third item — spell shield for protected dive windows; ability haste stacks with Serylda’s
4. Serpent’s Fang — Fourth item — shield-breaking for support-heavy or enchanter team comps
5. Axiom Arc / The Collector — Fifth item — ult cooldown reduction for reset-style ultimates or execute passive for kill conversion

Anti-Tank Skirmisher Build (Wukong / Renekton)

6. Trinity Force / Stridebreaker — First item — ability haste + AD foundation with unique passive for sustained skirmishing
7. Serylda’s Grudge — Second item — armor penetration for tank matchups, BITTER COLD to prevent kiting in extended duels
8. Black Cleaver — Note: Black Cleaver is also FATALITY — cannot stack with Serylda’s; choose one or the other based on need
9. Sterak’s Gage — Third item (if no Black Cleaver) — anti-burst shield and bonus AD for extended fight survivability
10. Mortal Reminder — Note: Also FATALITY — cannot stack; factor in Grievous Wounds need vs armor pen need when choosing FATALITY item

🔄 Similar Items & Alternatives

❌ Common Mistakes & How to Avoid Them

• Buying it on auto-attack champions: BITTER COLD only triggers on ability damage. Champions whose primary damage output is basic attacks (Tryndamere, Master Yi) gain zero slow value from the passive. Lord Dominik’s Regards provides comparable armor pen with a different bonus damage mechanic that doesn’t rely on ability damage.
• Ignoring the FATALITY limitation at build planning: Discovering mid-game that you need Mortal Reminder (enemy Soraka is keeping their team alive) but you already completed Serylda’s means selling at a gold loss. Identify whether Grievous Wounds or the slow is more critical against the enemy composition before your first major item back.
• Building it against squishy-only enemy teams: 35% armor penetration delivers minimal extra damage against targets with 30-50 base armor. Against zero-armor-items enemy teams, Serylda’s armor pen contributes maybe 5-10% more damage compared to a flat AD item. Duskblade, Edge of Night, or Axiom Arc will outperform it in squishy matchups.
• Not tracking the DoT reapplication window: BITTER COLD’s extended slow from DoT ticks is the item’s hidden power. When your ability lands a DoT on a below-50% HP target, the slow continues reapplying on every tick. Use that window to land additional ability hits, reposition, or prevent escape — don’t treat the slow as a 1-second tool when DoTs can make it 3-5+ seconds.
• Stacking it with another FATALITY item: The shop won’t let you buy two FATALITY items simultaneously, but players sometimes sell and rebuy during the same game without tracking what category they’re selling. Black Cleaver, Lord Dominik’s, and Mortal Reminder are all FATALITY — only one per champion at any time.

✅ Best Practices

• Choose FATALITY item at first back: Serylda’s is the right choice when the enemy has armor-stacking tanks and your champion deals ability damage with a need for the slow; Mortal Reminder if heavy healing is more dangerous; Lord Dominik’s for pure damage against fat HP tanks
• Maximize DoT ability hits against targets below 50% HP — every tick reapplies BITTER COLD, creating an extended slow window beyond the base 1 second
• In chase scenarios: land any ability on a target below 50% HP to trigger the 30% slow, then close distance with your gap-close before the slow expires — BITTER COLD effectively converts one ability hit into an approach window
• In Arena, buy it early — the 40% armor pen is higher than SR’s 35%, and Arena players frequently stack armor through augments
• On Talon and Kha’Zix with DoT: prioritize the ability that applies the DoT bleed as the opening hit against targets approaching 50% HP — the DoT reapplication ensures continuous slowing through the entire follow-up combo
• Against split-armor compositions (some tanks, some squishies), Serylda’s pen performs well against the armor targets while still providing BITTER COLD slow utility against the squishies below 50% HP

FAQ

Q: Does BITTER COLD trigger on auto-attacks?

A: A: No. BITTER COLD only triggers on ability damage. Basic attacks are completely excluded from the slow mechanic. This is the most important mechanic to understand before building Serylda’s — auto-attack-primary champions get no slow value from the passive. Only champions who deal ability damage regularly (Zed, Talon, Kha’Zix, ability-caster fighters) benefit from BITTER COLD.

Q: Can BITTER COLD be active above 50% HP?

A: A: No. The 30% slow only activates when the target is AT or BELOW 50% of their maximum health at the moment ability damage is applied. Above 50% HP, Serylda’s Grudge is purely a stats item — 45 AD, 15 ability haste, and 35% armor pen without the passive effect.

Q: How long does BITTER COLD last with a DoT ability?

A: A: As long as the DoT is ticking plus 1 second after the last tick. Each DoT tick that lands while the target is at or below 50% HP independently reapplies the 30% slow. A 3-second DoT ability against a below-50% target effectively applies a continuous 4-second slow (3s of ticks + 1s after the last tick). For longer DoTs, the slow window extends proportionally.

Q: What other items share the FATALITY limitation with Serylda’s?

A: A: The FATALITY category includes Serylda’s Grudge, Lord Dominik’s Regards, Mortal Reminder, and Black Cleaver. Only one of these can be held at any time. The choice between them is the primary build decision for AD champions facing armored or healing-heavy enemy compositions.

Q: Is Serylda’s Grudge better than Lord Dominik’s Regards for assassins?

A: A: For ability-damage assassins, yes — in most cases. Lord Dominik’s provides slightly higher burst damage potential through its HP-difference bonus, but offers zero utility beyond damage. Serylda’s BITTER COLD slow gives assassins a critical chase and post-dive escape tool that doesn’t exist in Lord Dominik’s kit. Against tank matchups where the slow enables landing the full combo, Serylda’s typically delivers more complete value than raw damage.

Q: Does Serylda’s Grudge’s slow stack with Rylai’s Crystal Scepter?

A: A: Rylai’s Crystal Scepter is an AP item that applies a slow on ability hits. The slows from both items are categorized differently but their slow values do not stack additively in most cases — the highest slow value typically takes precedence, and since both apply 30% slow (Rylai’s applies varying amounts depending on ability type), there’s minimal additive benefit. In practice, only AP champions build Rylai’s, and AD champions build Serylda’s — this is not a realistic dual-item scenario.

Q: Does Arena’s 40% armor pen make Serylda’s better there than on SR?

A: A: In terms of raw armor penetration value, yes — 40% vs 35% delivers more damage against the same armor total. Combined with Arena’s tendency for players to stack armor through augments and item synergies, the higher penetration rate interacts with more base armor values. The AD and ability haste reductions are minor enough that the armor pen increase typically results in a net positive for damage output compared to SR.