mtg card backs Who Makes the Best Proxies? but which would you rather have when its raining Card back - MTG Wiki

Drawing 6, 9, or even 12 extra cards by turn 3 or 4 allowed Blue to simply overwhelm opponents with resources

This might not seem like a big deal to everyone, but if you were around when Thirst for Knowledge was restricted in Vintage, youre likely as excited as I am to start Cubing with Thirst for Discovery

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token that's a copy of this creature that's tapped and attacking that player or a planeswalker they control

As if it wasnt fun enough to play a card called Pink Horror that synergizes nicely in your Izzet spellslinger deck, when it dies, you create two miniature versions of it called Blue Horrors