Eldrazi Obligator

Threaten effects have always paid the same tax: you steal a creature for a turn, swing, and hand it back with nothing to show for the mana. The optional cast payment rewrites that math by stapling the steal onto a hasty 3/1 that outlives the turn it stole on. Pay the surcharge and you untap your victim, give it haste, and point it wherever you like; decline it and you still have a three-power attacker for . That split is the whole design: a creature when nothing is worth borrowing, a tempo grenade when something is. The theft is a one-shot, triggered only when you cast the spell, not a repeatable engine; the leash that keeps it from landing in every red deck for free is the colorless mana it demands, tying the effect to a manabase that can produce the specific symbol rather than handing the steal to red at large. Because the ability triggers on cast, it sits on the stack above the creature and resolves before that body ever reaches the battlefield: you take the target even if the 3/1 is then countered on the way in. Devoid strips the printed card to colorless, which matters for spells and triggers that read color, though its identity stays red on the cost. The lineage runs back through every Threaten variant that wished it left a body behind. This one does, and firing the steal from the stack rather than the battlefield makes it harder to interrupt than the sorcery-speed thefts it descends from.