Celestus Sanctifier

A 3/2 that resolves a genuine bootstrapping problem in its own mechanic: the transition trigger it wants can only ever fire once the game is already committed to one of the two modes, and a fresh board is committed to neither. This body forces the sun up the moment it lands, converting an idle rules-flag into a live cycle, then looks at the top two cards of your library and bins one into your graveyard every time the state flips thereafter. Because the toggle runs on the game's natural rhythm (a quiet turn with no spellcasting tips into night, a turn with two or more spells swings back to day), the second ability feeds as a byproduct of ordinary play rather than demanding a dedicated shell to keep it firing. The filtering is deliberately modest and one-directional: look at two, bin one, no raw card advantage, so it can afford to trigger on both halves of the cycle without warping the game. That restraint is the point. It rewards a deck already committed to spilling the graveyard and pushing the busy end of the axis, since a full turn of casting is what flips night back toward day, and every flip in either direction feeds another dig. It is a payoff that assumes you have bought into the transition, and pays out steadily once you have.