Dimir House Guard

Discard it for and the evasive skeleton stops mattering: the card itself is a tutor for any four-mana card in your library, fetched at sorcery speed straight into hand. That is the whole proposition of transmute, a black mechanic that turns every copy into a search engine pointed at its own mana value, while still leaving a castable body in the deck for the games where you draw the creature instead. Four is a generous band to be searching, which is what gave this one its quiet utility: it reaches a wide stretch of the most impactful spells printed without committing a deck slot to a dedicated tutor that does nothing on its own. As a creature it is forgettable on purpose, an evasive 2/3 that sacrifices a creature to regenerate, the kind of midrange filler that fills out a curve and asks nothing of the deck around it. The sacrifice-to-regenerate ability is a holdover from an era when skeletons were built as durable blockers; it occasionally swings a grind, but it is not why anyone runs the card. They run it because it is a tutor in creature clothing, hard-cast as a body when the board is thin and pitched as a fetch when the game wants a specific four-mana answer.