It's official, they're finally adding in the famed black dragon. And oh boy, is he ever unique.
Deathwing has total immunity to crowd control (with one or two exceptions), but is also immune to allied effects (not sure if that includes healing). He's pretty much THE solo hero, and probably is expected to go off on his own and do his own thing in every match rather than fight with teammates since they can't buff him.
I imagine this would *not* translate well into League and would probably be deemed toxic gameplay, but let's humor the notion for a second. Could it be workable?