Step 1: Use Grails for 100 Affliction
Step 2: Bring like five VoFs
Step 3: Bring 2-3 Mars for Fire Res-
Step 4: Get ALL the debuffs.
I'm actually not sure are step 2 and step 3 better in that order or not, but seeing how much easier it is to have Mordred than Mars, I'd think so.