Whetwheel

The activation reads steeper than it is: it costs two mana for every card milled, a flat rate that never accelerates, so the design quietly discourages using it as a one-shot library-dump and rewards repeated small bites instead. The card wants to grind, and the colorless frame means any deck can install it as a slow clock regardless of color commitment. The morph clause is what gives the piece its second life. Cast face down as a generic 2/2 for , it withholds information: an opponent cannot tell whether they are looking at a beater, a combat trick, or a mill engine, and you can defer the choice of whether to commit to the mill plan at all. Flipping it up for the morph cost converts the body into a tap-engine on your own timing, and because that flip happens at instant speed, the permanent can slide under a sorcery-speed sweeper: respond to the wrath, flip in answer, and what would have died as a 2/2 survives as an artifact the board wipe never touches. The result is a piece that masquerades as filler until it elects to become an engine, asking less about raw output than about when you reveal which of the two cards you actually deployed.