Talk:Deathfire Touch (Season 2016 Mastery)/@comment-25532677-20160218073633/@comment-26071360-20160218080932

I tested it on Varus. It seems blight being detonated does not proc DFT, possibly because the ability is passive in both of its mechanics. I observed DFT having the same duration when I hit with Q with and without blight stacks on the target, the amount of stacks being irrelevant.

I'm not sure if it was the answer you were looking for, but I did another test with Kassadin. Q and W active predictably applies DFT as a single-target effect, while W passive does not apply it due to being passive. E applies it as an AoE. Applying it as an AoE and then as single-target caused the effect to be overwritten by the strongest effect, so using Q and E after it hit would change nothing while E and then Q would apply it with 2 and then 4 seconds duration (not stacking, meaning some is wasted when it is overwritten).

I can't really think of another damaging mark that is applied single targeted and procced by AoE. The closest thing would be Vel'Koz I assume. His passive (true damage every 3 spell hits) is applied as a single-target effect, meaning Rylais has full effect on the detonation even if it was reached via an AoE like his W or R. From testing, his mark detonation does not seem to apply DFT at all, as detonating with W caused 2 seconds and detonating with Q caused 4 seconds (all hits of Q apply DFT as single target effects, interestingly). I can't think of another champion with single target marks procced by AoE damage that are not passive. Akali used to fall under this category, but as her Q is no longer procced by E, it's impossible to test.