+37 -31 cards -- Not quite as many changes as white, but quite a few nonetheless!

Many of these are upgrades in similar design space as their replacements. There are a couple fewer tempo bounce creatures (man-o'-war) but many power and toughness upgrades for the same mana value. There are new 2 cmc tempo counterspells and cheap draw. We're losing a bit of the graveyard enablers (Thirst, Forbidden Alchemy, Frantic Search, etc.) but I believe upgrades in black and red will continue making them sufficient for reanimator support (white gained a few cheap discard outlets as well, so we'll see what happens). Going to try out Show and Tell. It's a big cube, so it could be fun, or could be very ineffective.

I'm hoping these changes will make blue be able to stand on its own a little bit more, and planeswalker upgrades give it a little more effective artifact synergies.