If you want to draft Rabbits, you can
You need 5 devotion to black for Erebos to be a creature, but then he's a 5/7
She's a lovely little addition to a white weenie deck, or in fact any deck where you might want to tutor in a cheap creature
(2019-07-12) You both draw and discard while Bag of Holding's second ability is resolving
In the actual lists, however, he gives you ridiculous amounts of value by being able to flash in stuff at opportune moments, enabling you to get around opposing interaction and set up your wins for a strong finish
While his stats are beefy, hes still a vanilla card with no effect, so hes not very popular among players, but he does still get some fringe play in certain Steel decks because, at the end of the day, big stats are big stats, and its nice to have a big dude to play if the game goes long