More Card Draw If all goes well, I'll be making tokens and drawing cards, but if there's one thing that's better than a bit of card draw in your EDH game, that would be a LOT of card draw in your EDH game
These include cards such as Kozilek (card draw, counter), Deepfathom Skulker (card draw, unblockable), Sire of Stagnation (card draw), Oblivion Sower (land fetch), Desolation Twin (creature token), Drowner of Hope (creature tokens, tap), World Breaker (removal), Hideous Taskmaster (steal, annihilator), etc
Then you have an impressively cheap flashback cost allowing you to get another 3 in for a still respectable 3 mana
Being able to wait until the last moment keeps opponents guessing and lets you pivot based on what the table is doing
Zendikar also had a minor milling theme that was cut back a bit in development (although the Hedron Crab is nothing to laugh at.) In the early days there was some doubt as to how much popularity milling has, but every time we've made a push towards an exciting milling card, the audience has been very receptive