Tolarian Entrancer

A theft engine disguised as a 1/1, and the design fork that makes it sing is the requirement to be blocked. This Wizard doesn't take a creature you point at; it takes whatever the opponent chose to throw in front of it, which inverts the usual logic of combat. Blocking is supposed to be the defender's safe play, the way you trade down or eat an attacker for free. Here it becomes a trap: declare a blocker that survives the Entrancer's lone point of damage, and it changes sides at end of combat. The math gets stranger when you gang-block, because the trigger fires for each creature that blocks: stack three bodies on the 1/1, and every one of them that lives through combat walks over to the other side of the table. The control transfer waits until end of combat, so the blockers still deal their damage that turn; the steal lands after the fight is settled. The honest counterplay is small and ugly: throw a single 1-toughness creature in the way, trade it for the Entrancer's damage, and nothing gets stolen because nothing survives. That escape hatch is exactly what keeps the card from being broken, and it tells you what the Entrancer really is: a Wizard daring you to deal with a 1/1 in the one way that costs you, while quietly hoping you panic-block with something you'd rather keep. Early blue, punishing the way combat is supposed to work rather than winning the combat outright.