Deathfire Touch

Effect

Dealing ability damage or pet damage to enemy champions inflicts a burn that deals (3/2) + ((12/2)-(3/2))/17*(x-1) (+ 3.5% bonus AD) (+ 1.25% AP) magic damage every 0.5 seconds over the duration. After the burn has lingered on a target for 3 seconds, its damage to them is increasedto (3*1.75/2) + ((12*1.75/2)-(3*1.75/2))/17*(x-1) (+ 6.13% bonus AD) (+ 2.19% AP) per tickwhile it lasts.

The burn's duration is based on the form of ability damage dealt to the target and is refreshed on subsequent applications:
* Spell damage: 4 seconds.
* Area damage: 2 seconds.
* Persistent damage: 1 second.
* Persistent area damage: 1 second.
* Pet damage: 1 second.