Cunning

A pump aura with a self-destruct clause, built around the idea that a permanent buff should cost something when it actually does its job. The +3/+3 is real and stays real right up until the enchanted creature commits to combat: attack or block, and the Aura is gone at the next cleanup. That phrasing matters, because the trick is the window between the trigger and the cleanup step. The bonus is still on the board during the combat that triggered the sacrifice, so the creature swings or blocks at full size before the Aura leaves. You get one genuine attack or block out of it, sized like a much larger threat, and then you are back to a naked body. The design reads as the cheap, asymmetric answer to traditional pump auras: the same problem a card like Unholy Strength or a Standard-issue +X/+X enchantment poses (a permanent body that overcommits into removal), reframed so that the enchantment pays for its own efficiency by leaving after a single use. It rewards holding it until the moment the extra size decides a combat rather than slapping it down early for board presence. As a piece of Exodus-era blue, it is a curiosity more than a staple: a combat trick wearing an Aura's clothes, priced low precisely because it refuses to stick around.