Rasputin perfectly suits the colors he finds himself pressed into
Graveshifter is simply a changeling Gravedigger, and that can fit more than one deck besides zombie typal
If a single legendary deals a player 21 or more combat damage, that player loses the game
Cheaper cycling cards like Hieroglyphic Illumination are used as a draw-2 in the midgame and a 1-mana cycler to help find lands early in the game
Your creatures are smaller, sneakier, and not ready to stand up in a knock-down brawl like tribes of Dragons, Angels, Beasts, Wurms, and more
Even more depressing, a full half of the mythics are worth less than $3, meaning that even if you manage to crack a mythic in your booster pack, you only have a coin-flip chance at making your money back