And this was the top link: http://boards.na.leagueoflegends.com/en/c/gameplay-balance/XnGo7WIl-does-deathfire-touch-apply-grevious-wounds-from-morellonomicon
My own inquiry from about 2 months ago lol. Still no confirmation, still no idea how to find out.
P.s. Could I please just get some red text on this?
Erockandroll3 votesDeath fire touch does magic damage.
Morrelomicon's effect triggers on magic damage.
so yeah, it should be the case, and it would be a bug otherwise.
Samflash31 votesIt should. If it doesn't, then it's a Kha'Zix.
Paroe1 votesWhy cant you test it yourself? o.O
venomous frost1 votesgo in a bot game and test it out
Ackelope1 votesYou could test this relatively easily with a friend in a custom or even possibly a bot game. Just pick an ap champ, rush a morellonomicon, get the enemy down to the necessary HP threshold, and then deal damage to them with a non-DoT ability, and let Deathfire touch do its work. If you see the grievous wounds timer being reset continually, then it's the deathfire touch applying it. Or you could pick an AD champ, and deal dmg to them until they're low enough, and then hit them with an ability, and if it triggers the grievous wounds, you know deathfire touch is applying it, since it only applies on magic damage, which deathfire touch deals.
Hong Kong Revolt1 votesEven Sunfire Cape applies Grievous Wounds. Garens ult. wit's end/nashor's tooth. other Keystones. corki's autos. It says all magic damage, so it does
Spoofghoul1 votesAny magic damage triggers it
it works well with sunfire and thornmail especially
and yes it works with DFT
it even works with my magical farts then again those do 1000000k nosebleeding magic damage so the grievous wounds would be overkill must be all them 
