In addition, if Harmonize is cast this way, the player may tap an untapped creature they control as an additional cost to cast that spell
Gut, True Soul Zealot piles up evasive skeletons, adding 10 power to the board over the course of just the first two turns
(And although I didn't do it here, it's possible to deal exponentially infinite damage in a single turn: include Wild Growths and a Twiddle so that each iteration of the Timetwister-Regrowth loop nets positive mana, and include Berserk in the loop to exponentially double a creature's power each time
Beast Frustrated Designer Beast here contains both the Ruby and Sapphire colors, which most likely means that he can only be included decks that contain both of these colors
Theres the standard tier of rarities including Common, Uncommon, Rare, Super Rare and Legendary