Champions › Heimerdinger
Heimerdinger Bot Build, Patch 26.20 — Runes, Ability Damage & ARAM Buffs/Nerfs
the Revered Inventor · AP damageMageSupportBattlemageBot
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 Heimerdinger against any opponent at any level.
Damage LabLaning matchupBuild LabARAM sheet
Heimerdinger build and runes (Bot, patch 26.20)
Item order
- Rabadon's Deathcap
- Spellslinger's Shoes
- Zhonya's Hourglass
- Shadowflame
- Dusk and Dawn
- Riftmaker
Start: Doran's Ring, Health Potion
Situational: —
Rune page
Domination · keystone Electrocute
Cheap Shot, Sixth Sense, Treasure Hunter
Secondary: Axiom Arcanist, Transcendence
Summoners: Flash, Ignite · Skill order: Q > E > W
Heimerdinger is classified AP from its ability scalings; itemization computed from Rabadon's Deathcap + current-patch item stats. Win-rate shown is an estimate and does not drive the build.
Heimerdinger base stats by level
| Level | Health | Attack damage | Armor | Magic resist | Attack speed |
|---|---|---|---|---|---|
| Level 1 | 558 | 56.0 | 19.0 | 30.0 | 0.658 |
| Level 6 | 973 | 66.7 | 35.6 | 35.1 | 0.693 |
| Level 11 | 1,479 | 79.7 | 55.9 | 41.4 | 0.737 |
| Level 18 | 2,343 | 101.9 | 90.4 | 52.1 | 0.810 |
Growth follows Riot's per-level curve: value = base + growth × (n−1) × (0.7025 + 0.0175 × (n−1)).
Heimerdinger ability damage per rank
Q — H-28 G Evolution Turret none
| Rank | R1 | R2 | R3 | R4 | R5 |
|---|---|---|---|---|---|
| Base damage | no direct damage | ||||
| Cooldown (s) | 1.0 | — | — | — | — |
Scaling: no scaling.
W — Hextech Micro-Rockets magic
| Rank | R1 | R2 | R3 | R4 | R5 |
|---|---|---|---|---|---|
| Base damage | 40 | 60 | 80 | 100 | 120 |
| Cooldown (s) | 11.0 | 10.0 | 9.0 | 8.0 | 7.0 |
Scaling: 48% AP.
Heimerdinger W damage by champion level (own stats, no items)
| Level | Rank | Raw damage | Cooldown |
|---|---|---|---|
| Level 1 | rank 1 | 40.0 | 11.0s |
| Level 3 | rank 2 | 60.0 | 10.0s |
| Level 6 | rank 3 | 80.0 | 9.0s |
| Level 9 | rank 5 | 120.0 | 7.0s |
| Level 11 | rank 5 | 120.0 | 7.0s |
| Level 13 | rank 5 | 120.0 | 7.0s |
| Level 16 | rank 5 | 120.0 | 7.0s |
| Level 18 | rank 5 | 120.0 | 7.0s |
E — CH-2 Electron Storm Grenade magic
| Rank | R1 | R2 | R3 | R4 | R5 |
|---|---|---|---|---|---|
| Base damage | 60 | 100 | 140 | 180 | 220 |
| Cooldown (s) | 11.0 | — | — | — | — |
Scaling: 60% AP.
Heimerdinger E damage by champion level (own stats, no items)
| Level | Rank | Raw damage | Cooldown |
|---|---|---|---|
| Level 1 | rank 1 | 60.0 | 11.0s |
| Level 3 | rank 2 | 100.0 | 11.0s |
| Level 6 | rank 3 | 140.0 | 11.0s |
| Level 9 | rank 5 | 220.0 | 11.0s |
| Level 11 | rank 5 | 220.0 | 11.0s |
| Level 13 | rank 5 | 220.0 | 11.0s |
| Level 16 | rank 5 | 220.0 | 11.0s |
| Level 18 | rank 5 | 220.0 | 11.0s |
R — UPGRADE!!! magic
| Rank | R1 | R2 | R3 |
|---|---|---|---|
| Base damage | no direct damage | ||
| Cooldown (s) | 100.0 | 92.5 | 85.0 |
Scaling: no scaling.
Heimerdinger ARAM buffs & nerfs (Howling Abyss balance modifiers)
Heimerdinger deals -10% damage and takes +10% damage on the Howling Abyss.
| ARAM modifier | Value |
|---|---|
| Damage dealt | -10% |
| Damage taken | +10% |
| Healing | — |
| Shielding | — |
| Attack speed | — |
| 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 Heimerdinger build on patch 26.20?
RiftLab's stat-driven build for Heimerdinger Bot is Rabadon's Deathcap, Spellslinger's Shoes, Zhonya's Hourglass, Shadowflame, Dusk and Dawn, Riftmaker, with Electrocute as the keystone. It is computed from the champion's damage profile and the opponent's resists, not from win-rate scraping.
Does Heimerdinger have ARAM modifiers?
Yes. On ARAM Heimerdinger deals -10% damage and takes +10% damage.
How much health does Heimerdinger have at level 18?
Heimerdinger has 2,343 base health, 90.4 armor and 52.1 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.