This list is primarily concerned with tempo and of course, blotting out the sky with drakes
On the front side, it forces everyone to discard when it enters or attacks, then it rewards you with card draw based on types discardedwhich often puts you far ahead
Belbe, Corrupted Observer If youve ever wondered what a Golgari group hug commander might look like, wonder no more, for we have Belbe, Corrupted Observer
In the early game, you can cash in a token to remove your opponent's best thing and then later start growing your tokens with the equipment, which only costs a single mana to equip
This is basically a control players dream scenario, and I think we could see a few cards with this ability breaking into older formats
#1 and #2