I noticed that the post, and some people missed, Aftermath; warlocks; destruction
Aftermath: rain of fire does not need to be channeled, and will stun all enemies struck for 2 seconds.
this seems cool, so we can cast a rain of fire, with mannoroth's fury and watch it stun the crap out of everyone in a BG every time it ticks twice?
Edit, I spelt the title wrong /shame
also rain of fire deals 50% more damage if the target is immolated.