Champions › Kai'Sa
Kai'Sa Bot Build, Patch 26.20 — Runes, Ability Damage & ARAM Buffs/Nerfs
Daughter of the Void · Hybrid damageADCMageBot
Every number below is computed from Riot's official game data for patch 26.20 — the Worlds 2026 patch (Data Dragon, with Meraki Analytics ability values and Riot's published ARAM balance), not sampled from match histories. Open the interactive labs to test Kai'Sa against any opponent at any level.
Damage LabLaning matchupBuild LabARAM sheet
Kai'Sa build and runes (Bot, patch 26.20)
Item order
- Infinity Edge
- Plated Steelcaps
- Rabadon's Deathcap
- Bloodthirster
- Trinity Force
- Death's Dance
Start: Doran's Blade, Health Potion
Situational: —
Rune page
Precision · keystone Press the Attack
Absorb Life, Legend: Alacrity, Coup de Grace
Secondary: Axiom Arcanist, Transcendence
Summoners: Flash, Ignite · Skill order: Q > W > E
Kai'Sa is classified Hybrid from its ability scalings; itemization computed from Infinity Edge + current-patch item stats. Win-rate shown is an estimate and does not drive the build.
Kai'Sa base stats by level
| Level | Health | Attack damage | Armor | Magic resist | Attack speed |
|---|---|---|---|---|---|
| Level 1 | 640 | 59.0 | 25.0 | 33.0 | 0.644 |
| Level 6 | 1,043 | 69.3 | 41.6 | 37.3 | 0.690 |
| Level 11 | 1,535 | 81.8 | 61.9 | 42.7 | 0.746 |
| Level 18 | 2,374 | 103.2 | 96.4 | 51.7 | 0.841 |
Growth follows Riot's per-level curve: value = base + growth × (n−1) × (0.7025 + 0.0175 × (n−1)).
Kai'Sa ability damage per rank
Q — Icathian Rain physical
| Rank | R1 | R2 | R3 | R4 | R5 |
|---|---|---|---|---|---|
| Base damage | 90 | 124 | 158 | 191 | 225 |
| Cooldown (s) | 10.0 | 9.0 | 8.0 | 7.0 | 6.0 |
Scaling: 45/45/45/45/45% AP, 123.75/123.75/123.75/123.75/123.75% bonus AD.
Kai'Sa Q damage by champion level (own stats, no items)
| Level | Rank | Raw damage | Cooldown |
|---|---|---|---|
| Level 1 | rank 1 | 90.0 | 10.0s |
| Level 3 | rank 2 | 123.8 | 9.0s |
| Level 6 | rank 3 | 157.5 | 8.0s |
| Level 9 | rank 5 | 225.0 | 6.0s |
| Level 11 | rank 5 | 225.0 | 6.0s |
| Level 13 | rank 5 | 225.0 | 6.0s |
| Level 16 | rank 5 | 225.0 | 6.0s |
| Level 18 | rank 5 | 225.0 | 6.0s |
W — Void Seeker magic
| Rank | R1 | R2 | R3 | R4 | R5 |
|---|---|---|---|---|---|
| Base damage | 30 | 55 | 80 | 105 | 130 |
| Cooldown (s) | 22.0 | 20.0 | 18.0 | 16.0 | 14.0 |
Scaling: 130/130/130/130/130% total AD, 45/45/45/45/45% AP.
Kai'Sa W damage by champion level (own stats, no items)
| Level | Rank | Raw damage | Cooldown |
|---|---|---|---|
| Level 1 | rank 1 | 106.7 | 22.0s |
| Level 3 | rank 2 | 136.7 | 20.0s |
| Level 6 | rank 3 | 170.1 | 18.0s |
| Level 9 | rank 5 | 229.5 | 14.0s |
| Level 11 | rank 5 | 236.4 | 14.0s |
| Level 13 | rank 5 | 243.7 | 14.0s |
| Level 16 | rank 5 | 255.6 | 14.0s |
| Level 18 | rank 5 | 264.2 | 14.0s |
E — Supercharge none
| Rank | R1 | R2 | R3 | R4 | R5 |
|---|---|---|---|---|---|
| Base damage | no direct damage | ||||
| Cooldown (s) | 16.0 | 14.5 | 13.0 | 11.5 | 10.0 |
Scaling: no scaling.
R — Killer Instinct none
| Rank | R1 | R2 | R3 |
|---|---|---|---|
| Base damage | no direct damage | ||
| Cooldown (s) | 120.0 | 90.0 | 60.0 |
Scaling: no scaling.
Kai'Sa ARAM buffs & nerfs (Howling Abyss balance modifiers)
Kai'Sa deals normal damage and takes -10% damage on the Howling Abyss.
| ARAM modifier | Value |
|---|---|
| Damage dealt | — |
| Damage taken | -10% |
| Healing | — |
| Shielding | — |
| Attack speed | +2.5% |
| Ability haste | — |
| Tenacity | — |
| Energy regen | — |
ARAM also starts champions at level 3 with 1,400 gold. The ARAM sheet applies these modifiers to every stat and ability side by side with Summoner's Rift.
Frequently asked
What is the best Kai'Sa build on patch 26.20?
RiftLab's stat-driven build for Kai'Sa Bot is Infinity Edge, Plated Steelcaps, Rabadon's Deathcap, Bloodthirster, Trinity Force, Death's Dance, with Press the Attack as the keystone. It is computed from the champion's damage profile and the opponent's resists, not from win-rate scraping.
Does Kai'Sa have ARAM modifiers?
Yes. On ARAM Kai'Sa deals normal damage and takes -10% damage.
How much damage does Kai'Sa's Icathian Rain do?
Kai'Sa's Q (Icathian Rain) has a base damage of 90/123.75/157.5/191.25/225 across its ranks and scales with 45/45/45/45/45% AP, 123.75/123.75/123.75/123.75/123.75% bonus AD. Before the target's resistances; use the Damage Lab for the mitigated number against a specific opponent.
How much health does Kai'Sa have at level 18?
Kai'Sa has 2,374 base health, 96.4 armor and 51.7 magic resist at level 18 with no items, on patch 26.20.
Data: Riot Data Dragon 26.20, Meraki Analytics, LoL Wiki ARAM table. Builds are stat-driven recommendations from RiftLab's optimizer, not win-rate aggregates.