Zagoth Crystal

A three-color rock built around a flooding safety valve: it fixes for a Sultai wedge early and turns into a fresh card once you no longer need the fixing. The cycling line is what earns it a slot over a plainer signet-style two-drop, because it never sits dead in your hand in the late game. Discarding it for a draw trades the ramp function for a new card the moment the mana is no longer the problem. The cost structure is honest about what it does. Entering for three and tapping for a single mana means it does not accelerate you the way a two-mana rock does; it fixes rather than ramps, smoothing a base toward its black, green, and blue requirements while the cycling clause insures against the top of the deck. That dual mode places it among the fixing pieces designed to hedge against their own obsolescence, the same instinct behind cycling lands and mana-fixing that folds into a spell later, offered here in the most color-committed form: a rock that treats fixing as a first-few-turns job and hands you an exit once that job is finished.