Deathfire Touch

Damaging a champion with an ability burns them for 3 - 12 based on level (+2.5% AP) (+7% bonus AD) magic damage per second. After burning for 3 seconds, the damage of the burn increases by 75% while they remain on fire. Duration: Single Target: 4s Area of Effect: 2s Damage over Time: 1s

Tree

Sorcery

Row

Keystone

In short

Damaging a champion with an ability burns them over time.

Patch

16.16.1