Riftmaker

What is Riftmaker? 🌀

Riftmaker is a legendary Mage item in League of Legends, categorized under Mage, Ability Power, Health & Regeneration, Ability Haste, and Life Steal & Vamp. It is the game’s primary combat-duration scaling AP item — designed for champions who fight prolonged engagements rather than single-burst windows. The longer Riftmaker’s holder stays in combat with enemy champions, the more damage they deal and the more sustain they recover through Omnivamp.

The VOID INFUSION passive adds a second dimension: every point of bonus health converts to additional AP at 2%. This rewards stacking HP items alongside Riftmaker — a build pattern that simultaneously increases survivability and offensive output. At 350 HP from the item itself, VOID INFUSION contributes 7 AP, bringing effective AP to 77.

At 3,100 Gold, Riftmaker is one of the pricier AP legendaries. The higher cost reflects the item’s triple stat contribution (AP + AH + HP), its combat-ramp passive, and the Omnivamp threshold reward. Sell price: 2,170 Gold.

📊 Base Statistics & Effective AP

🔨 Recipe & Components

Riftmaker builds from an AP + HP component and an AP + AH component:

🌀 Passive Mechanics: VOID CORRUPTION & VOID INFUSION

VOID CORRUPTION — Ramp-Up Damage + Omnivamp Threshold

For each second in combat with champions, deal 2% increased damage, stacking up to 4 times for a maximum of +8%. At maximum stacks, you gain 10% Omnivamp (melee) or 5% Omnivamp (ranged).

Important duration notes: VOID CORRUPTION lasts 3 seconds when not fully stacked and 5 seconds when at maximum stacks. This means reaching 4 stacks (4 seconds of continuous combat) extends the active window — you retain the Omnivamp for 5 seconds after the last combat contact rather than 3.

VOID CORRUPTION Stack Timeline

VOID INFUSION — HP-to-AP Conversion

Gain ability power equal to 2% of bonus health. This passive is always active and scales with every bonus HP source in the build — not just Riftmaker’s own 350 HP.

VOID INFUSION Scaling Reference

🏟️ Arena Mode — Map-Specific Differences

Arena buffs both Omnivamp values significantly: melee Omnivamp increases from 10% to 15%, and ranged Omnivamp from 5% to 8%. At 4 stacks in Arena’s confined combat environment, Riftmaker’s sustain is substantially stronger than on SR. The AP reduction from 70 to 60 is partially offset by the enhanced Omnivamp output. Note the escAPA augment bug: VOID INFUSION AP is not converted via the escAPA augment in Arena — a known documented bug.

🎯 Best Champions for Riftmaker

Riftmaker is strongest on AP champions who engage in prolonged sustained combat rather than single-burst windows. The 4-second ramp to Omnivamp requires staying in combat, which means tanks, drain-tanks, and sustained-damage mages extract more value than burst assassins who enter, combo, and disengage.

✅ Ideal Picks

• Vladimir — His Crimson Pact passive converts bonus HP to AP (and vice versa), stacking multiplicatively with VOID INFUSION’s 2% HP-to-AP. Both passives independently convert the same HP stat — every HP item purchased feeds two separate AP bonuses simultaneously. His drain-tank identity means VOID CORRUPTION’s 4-second Omnivamp threshold is consistently reached in his Q → E → R fight patterns.
• Cho’Gath — Feast (R) stacks generate permanent HP — each stack increases VOID INFUSION AP incrementally throughout the game. At late-game Feast stacks with high bonus HP, VOID INFUSION contributes 30-50+ AP from Cho’Gath’s inflated HP total alone. His engagement pattern (CC chain into sustained Q damage) comfortably exceeds the 4-second combat duration for Omnivamp activation.
• Tahm Kench (AP) — His Thick Skin (E) and devour-based HP pool make him a natural HP stacker. VOID INFUSION converts that HP into AP that scales his An Acquired Taste (P) passive stacks and Devour (W) damage. The sustained combat pattern of his kit comfortably reaches the Omnivamp threshold.
• Sylas — His passive Petricite Burst auto-attack chains and sustained ability rotation keep him in combat long enough for VOID CORRUPTION stacks to build. VOID INFUSION’s HP-to-AP conversion complements his preference for durability alongside damage.
• Singed — His playstyle involves extended combat presence through Poison Trail and Fling rotations — exactly the sustained combat duration that VOID CORRUPTION rewards. Omnivamp at max stacks lets him recover HP through the damage his poison deals to nearby enemies.
• Kennen — His E (Lightning Rush) allows diving into teamfights and staying engaged. Riftmaker’s ramp-up rewards his all-in engagement style. Omnivamp sustains him through the fight window and VOID INFUSION benefits from any HP stacking in his build.
• Rumble — His Flamespitter (Q) is a sustained channeled fire beam that naturally maintains combat contact for the full VOID CORRUPTION stack duration. Riftmaker’s Omnivamp at stacks provides passive sustain during extended Flamespitter channels.

❌ Suboptimal Picks

• Burst mages (Syndra, Lux, Veigar): Their entire damage window is 1-2 seconds of ability casts, followed by disengagement or cooldown wait. VOID CORRUPTION doesn’t reach full stacks in that window — these champions receive zero Omnivamp value and only partial damage ramp. Shadowflame’s immediate CINDERBLOOM execute passive or Rabadon’s raw AP amplification outperform Riftmaker at the same gold range.
• Marksmen and AD assassins: AP provides no offensive value. The Omnivamp is meaningful for sustained fighters but marksmen typically build lifesteal through AD items more efficiently. The gold is better spent elsewhere.
• Roaming mages (Twisted Fate, Zilean): Their value comes from global presence and pick potential rather than sustained fights. Riftmaker’s ramp requires being in combat for 4+ seconds — TF’s fights are often over before stacks complete.

⚙️ Recommended Build Paths

Vladimir Drain-Tank AP Build

1. Riftmaker — First item — VOID INFUSION compounds with Crimson Pact (HP → AP twice from same stat); VOID CORRUPTION Omnivamp sustains through Q → R drain windows
2. Rylai’s Crystal Scepter — Second item — RIMEFROST slow from every ability hit; +400 HP feeds VOID INFUSION (+8 AP) and Vladimir’s Crimson Pact (+8 AP separately); keeps targets in Riftmaker’s combat window
3. Shadowflame — Third item — CINDERBLOOM execute amplification on targets below 40% HP converts Riftmaker’s sustained damage into a burst finish
4. Rabadon’s Deathcap — Fourth item — AP multiplier on elevated base AP (77 from Riftmaker + 65 from Rylai’s + 110 from Shadowflame + VOID INFUSION bonus)
5. Seraph’s Embrace / Void Staff — Fifth item — mana sustain + AWE AP or percentage magic penetration based on enemy MR

Cho’Gath / Tahm Kench Tank-AP Build

6. Riftmaker — First item — VOID INFUSION begins scaling with every HP source from this point forward
7. Rod of Ages — Second item — TIMELESS HP stacking feeds VOID INFUSION incrementally every minute; ETERNITY dual sustain compounds with Riftmaker’s Omnivamp
8. Rylai’s Crystal Scepter — Third item — RIMEFROST slow on every hit; +400 HP contributes +8 AP via VOID INFUSION
9. Rabadon’s Deathcap — Fourth item — AP multiplier on high accumulated AP total (Riftmaker + Rod + Rylai’s + VOID INFUSION from all HP sources)
10. Situational fifth: Void Staff (vs MR stacking) / Shadowflame (vs low HP targets) / Zhonya’s (vs burst threat)

🔄 Similar Items & Alternatives

❌ Common Mistakes & How to Avoid Them

• Building it on burst mages expecting immediate sustain: VOID CORRUPTION’s Omnivamp requires 4 full seconds in combat with champions. Burst mages who finish fights in 1-2 seconds of ability casts never activate the Omnivamp — they receive only the partial damage ramp from 1-2 stacks. For burst playstyles, Shadowflame or Rabadon’s deliver higher damage output at the same gold range.
• Not building HP items alongside Riftmaker: VOID INFUSION converts 2% of bonus HP to AP. If the only HP source is Riftmaker’s own 350 HP, the passive contributes only 7 AP. Adding one or two HP items (Rylai’s +400, Rod of Ages +450 at stacks) meaningfully increases VOID INFUSION output. Ignoring this means leaving passive AP on the table.
• Treating Omnivamp as always-active sustain: Omnivamp only activates at full 4 stacks — a threshold that requires 4 continuous seconds of champion combat. In fights with brief disengages, the stacks expire (3 seconds if not at max) and must rebuild. Melee champions who stay engaged consistently benefit; ranged champions or those who kite and wait may frequently miss the window.
• Ignoring the melee vs ranged Omnivamp discrepancy: Melee champions receive 10% Omnivamp at max stacks. Ranged champions receive 5%. For ranged AP mages, the sustain benefit is half the melee value — if the motivation for building Riftmaker is primarily the Omnivamp, ranged champions should evaluate whether that halved sustain justifies the item over a direct AP alternative.
• Forgetting the Arena Omnivamp buff: In Arena, Omnivamp increases to 15% (melee) and 8% (ranged). This is a significant buff in Arena’s close-range sustained combat environment — Riftmaker is noticeably stronger in Arena than SR for Omnivamp-dependent builds.

✅ Best Practices

• Stay in combat for 4+ seconds: VOID CORRUPTION requires 4 seconds to reach Omnivamp — commit to extended fights rather than burst-and-disengage windows
• Stack HP items for VOID INFUSION: each HP item purchased feeds VOID INFUSION AP; on Vladimir/Cho’Gath this double-dips through their kit passives as well
• On Vladimir: build Riftmaker first — Crimson Pact and VOID INFUSION both convert the same HP independently; VOID CORRUPTION Omnivamp sustains his drain patterns through extended teamfight Q → E → R rotations
• In Arena: 15% melee Omnivamp at 4 stacks in a confined combat area means Riftmaker sustains through most round durations — factor in the higher Omnivamp when evaluating second and third item choices
• Pair with Rylai’s Crystal Scepter: RIMEFROST slow keeps targets in Riftmaker’s combat range, extending the VOID CORRUPTION window and delaying escape past the Omnivamp threshold
• Follow with Rabadon’s Deathcap third or fourth: the AP multiplier applies to VOID INFUSION AP in addition to base AP — all bonus AP from HP sources is amplified through Deathcap’s percentage increase

FAQ

Q: Does Omnivamp activate immediately on first combat contact?

A: A: No. Omnivamp requires 4 full stacks of VOID CORRUPTION — one stack per second in combat with champions. At 4 seconds of sustained combat, Omnivamp activates at 10% (melee) or 5% (ranged) on SR. In fights shorter than 4 seconds, no Omnivamp is gained. This is the fundamental design trade-off of Riftmaker versus direct lifesteal or instant-heal items.

Q: How much AP does VOID INFUSION actually provide?

A: A: VOID INFUSION grants 2% of bonus health as AP. From Richtmaker’s own 350 HP: 7 AP, bringing effective AP to 77. Every additional 50 bonus HP from other sources adds 1 more AP. At 1,000 total bonus HP (Riftmaker + Rylai’s + one more item), VOID INFUSION contributes 20 AP. At 2,000 bonus HP, 40 AP — enough that the invisible AP bonus is a meaningful portion of the total damage output.

Q: Is Riftmaker good on Vladimir?

A: A: Yes — Riftmaker is frequently Vladimir’s strongest first item. His Crimson Pact passive converts bonus HP to AP independently of VOID INFUSION, meaning each HP item purchased feeds two separate AP conversion passives simultaneously. Vladimir’s kit naturally reaches and maintains VOID CORRUPTION’s 4-second Omnivamp threshold through his Q and E drain patterns, and the Omnivamp sustain compounds with his inherent drain to make him extremely difficult to burst down in extended fights.

Q: Does Riftmaker’s Omnivamp apply to all damage types?

A: A: Omnivamp applies to all damage dealt — physical, magic, and true damage from champion abilities and basic attacks. At max VOID CORRUPTION stacks, every damage source heals the holder proportionally. This is broader than most spell vamp implementations.

Q: How does VOID INFUSION interact with Vladimir’s Crimson Pact?

A: A: Both passives independently convert bonus health to AP. Crimson Pact and VOID INFUSION are separate passives that each apply their own conversion rate to the same HP stat — they stack independently rather than competing. Every HP item purchased after Riftmaker on Vladimir generates AP through both Crimson Pact and VOID INFUSION simultaneously, which is why Vladimir extracts disproportionate value from HP stacking compared to other champions.

Q: Is there a limitation on how many Riftmakers can be held?

A: A: Yes — Riftmaker is Limited to 1 Riftmaker per champion. The item group doesn’t prevent stacking with other HP/AP items — only duplicate Riftmakers are restricted.

Q: Is Riftmaker stronger in Arena or SR?

A: A: Stronger in Arena for Omnivamp value. In Arena, melee Omnivamp increases from 10% to 15% and ranged from 5% to 8%. Arena’s confined combat spaces also make reaching the 4-second VOID CORRUPTION threshold easier — there’s less disengagement room for enemies, so sustained combat durations are naturally longer. Note the escAPA augment bug: VOID INFUSION AP is not converted through that augment in Arena.