Seeing as he wipes the battlefield when he leaves it, that's a lot of Zombies we're talking about
While this card likely wont be making waves in constructed formats, thanks to its high mana cost and cast clause preventing easy triggers of the graveyard-swap effect, it has a huge amount of potential in Commander, where you can easily assemble a game-ending board with this dastardly Demon
(Equipment, Auras you control, and counters are modifications.) Whenever you draw a card, put a +1/+1 counter on target creature
To shift the focus to some aspect that hasn't been dominant
user-set brackets
Attacking with Voja triggers one ability with two effects, adding +1/+1 counters to all your creature equal to the number of Elves you control, and then drawing a card for each Wolf you control