deathfire touch garen and talon

Dealing ability damage to enemy champions applies a bleed, dealing 1 (+ 3.125% AP) (+ 7.5% bonus AD) magic damage every half-second for a duration based on their type.

garen`s spin doesnt apply deathfire continously ,is it a spell ,is it not ? not on hit ,no lifesteal on E ,its an ability

and talons Q doesnt either ,especially bleed