Dominus of Fealty

Theft in blue is usually a one-shot, and in red it usually demands a sacrifice payoff to bank the value before the borrowed thing snaps back. This hybrid finisher turns it into a clock instead. The upkeep trigger steals any permanent (a creature, but also a planeswalker, an artifact, a problematic land) until end of turn, then untaps it and hands it haste so the borrowed thing is useful that same turn. The haste rider is the part that separates it from a defensive tempo play: a stolen blocker becomes an attacker, a tapped-out value engine fires immediately, a mana rock or land you take feeds your own turn before reverting. Across a long game the trigger compounds, because it fires every one of your upkeeps whether or not you committed anything else, and the 4/4 flying body keeps applying pressure while you decide what to borrow. The deliberate temporariness is what keeps the rate fair: nothing stays, so the card rewards converting the theft into damage or a sacrifice rather than building a stolen-permanent pile. It sits in the lineage of recurring control-magic effects that lean on a once-per-turn cadence, but the haste clause pushes it toward aggression rather than attrition, which is the unusual axis for an effect this open-ended. The five-symbol hybrid cost lets it anchor either color's shell without bending a manabase, true to the dual-identity these cards were built around.