Illicit Auction

A control-stealing spell built as an auction, which is a stranger and more honest design than the genre usually gets. Most steal effects (Control Magic and its descendants) hand you the creature for a flat cost and let you keep it; the auction structure turns the theft into a negotiation where the creature's owner gets to fight back with their own life total. The bid is denominated in life rather than mana, which is the real design hook: the resource you spend to win the creature is the same resource that loses you the game, so the auction has a natural ceiling that scales with how desperate each player is. You open the bidding at zero, which means a contested creature can be reclaimed by its owner for next to nothing if nobody else wants it badly enough, and the whole thing reads less like removal than like a poker hand played in life points. The effect lasts indefinitely, so the prize is permanent once the bidding stands, but the symmetry is the catch: you are inviting everyone, including the creature's controller, to outbid you. That makes it a poor tool for a tight duel and a peculiar, social one in a larger pod, where the bidding war can spiral and the table negotiates over who can least afford to keep the thing alive. It is a removal spell that asks a question rather than answering one.