Searchlight Geist

An evasive 2/1 with a deterrent bolted on: the body is fragile enough to die to incidental removal, but the activated ability rewrites how an opponent has to handle it in the air. Sink and the flier gains deathtouch for the turn, so any creature that trades blows with it dies regardless of size. On defense, that turns the spirit into a one-card answer to anything flying over the top: a 6/6 angel that swings into a deathtouch blocker dies for its trouble. On the attack, the threat is positional rather than blunt, since flying already limits who can stop it; the deathtouch makes the few creatures that can block think twice about doing so. The arithmetic is the constraint. The activation costs more than the spell did to cast, so this is a late-game mana sink rather than an early tempo play, and the slim toughness usually means it has to survive a turn before the ability ever pays off. What it sells is a way to convert surplus mana into a repeatable combat threat that scales as the game goes long: a creature whose menace changes the moment the controller can hold open. The template is a familiar one: cheap evasive bodies whose printed stats undersell them, banking mana toward an upgrade rather than spending everything the turn they land.