Hideous Taskmaster
The 7/2 body is the tell: this is a Threaten effect built to swing exactly once, with the fragility priced into the design. Where a classic steal-a-creature spell hands you one attacker for a turn, the cast trigger fires against every opponent at once, borrowing a creature from each of them and pointing the borrowed bodies back at their owners. The upgrade package closes the loop: haste lets the stolen creatures attack the turn you take them, the untap clears any that were tapped down, and the granted annihilator 1 means each borrowed attacker forces its defending player to sacrifice a permanent before damage. You are not simply swinging with someone else's creatures; you are making their creatures dismantle their board. The Eldrazi itself carries annihilator 1 and trample on a frame that trades toughness for reach, a glass cannon that expects to matter on its single connection. Devoid strips the color despite the in the cost, so the card reads as colorless for anything that keys off color, though casting it still asks for a red source. The whole design leans on simultaneity: one cast, a multi-opponent theft, and an attack step that taxes the entire table a permanent apiece, all of it resolving before the borrowed creatures return home at end of turn.
