Stats

Armor, magic resist, mana and attack speed are the same at every star level.

Heimerdinger

1 star: Empower the Baby Dragon to launch 3 fireballs across the battlefield that deal 425 magic damage, burning enemies for 18% of their max Health as true damage, and 50% Wound them over 6 seconds. If Heimerdinger does not have a Baby Dragon, this Ability will create one instead. Wound: Reduce healing received
2 star: Empower the Baby Dragon to launch 3 fireballs across the battlefield that deal 600 magic damage, burning enemies for 18% of their max Health as true damage, and 50% Wound them over 6 seconds. If Heimerdinger does not have a Baby Dragon, this Ability will create one instead. Wound: Reduce healing received
3 star: Empower the Baby Dragon to launch 3 fireballs across the battlefield that deal 3333 magic damage, burning enemies for 18% of their max Health as true damage, and 50% Wound them over 6 seconds. If Heimerdinger does not have a Baby Dragon, this Ability will create one instead. Wound: Reduce healing received

8 patches changed Heimerdinger, read out of Riot’s game files.

Patch 11.21
- Turret magic damage400 / 600 / 3333425 / 600 / 33331★ / 2★ / 3★
Patch 11.19Sept 2021
- Mana160140
Patch 11.17Aug 2021
- Attack speed0.750.7
- Mana140160
Patch 11.16Aug 2021
- Turret magic damage450 / 600 / 3333400 / 600 / 33331★ / 2★ / 3★
Patch 11.15Jul 2021
- Turret magic damage500 / 650 / 7777450 / 600 / 33331★ / 2★ / 3★
Patch 11.12Jun 2021
- Crit multiplier1.5%1.3%
Patch 11.11May 2021
- Turret magic damage400 / 600 / 7777500 / 650 / 77771★ / 2★ / 3★
Patch 11.10May 2021
- Mana120140
- Turret magic damage350 / 500 / 7777400 / 600 / 77771★ / 2★ / 3★