Angry Grimace
Two cannibals are eating a clown. One turns to the other and says "does something taste funny to you?"
After BFZ, I have serious doubts. I get that this is looking like the shakey-transition block between 3-set-blocks and 2-set-blocks, but they almost couldn't have done worse so far if they tried. If OGW is boring, this will go down as a low-point for the game, at least in my opinion.
Well on the plus side, Kozilek at least looks cool (Ulamog wasn't the problem with BFZ by any means) and Mirrorpool is almost certainly Standard playable (Dig Through Time twice for 6 mana is probably good)
Also, apropos of nothing, I really like the card Ob Nixilis Reignited. Not for any particular reason, I just find all of his abilities fun and powerful.