If you have hardly any villains in your deck, which I think will be unlikely for a black deck, Venom's Hunger is barely even playable
Protean Hulk lists don't work nearly so well in cube as they do in constructed as you typically draw some of the things you needed to find with the Hulk for the win
There were also some past corner cases where I wanted to be able to target my own creature for certain effects
If recent crossover drops like Monty Python are anything to go by, we can expect this one to sell out just as quickly, if not quicker, when it goes on sale exclusively through the Secret Lair website
(Note that some effects target a creature, and those effects would still require a legal target to have it explore.) (2018-01-19)
You can expect for it to gain 4 life and make 2 1/1s against any aggro deck which should be enough to stabilize the game and regain your footing