Lunarch Mantle

The +2/+2 is the bait; the activated ability is the trap. A two-mana Aura that pumps a creature is unremarkable, but stapling a repeatable evasion engine onto it changes what the Aura is for. The cost to fly is ", Sacrifice a permanent," and that clause turns this into a sacrifice outlet wearing the body of a combat enhancer. Each activation feeds an aristocrats engine, clears a doomed blocker before it can deal damage, or empties tokens for value, all while granting evasion to push the enchanted creature past the ground stall. The friction is built in: every flight has a permanent-shaped price tag, so the Aura asks you to have fodder worth sacrificing rather than letting you fly for free every turn. That pairing of an Aura's all-in commitment (lose the creature, lose the card) with a sacrifice engine that wants to feed it is an unusual collision of two opposing white design impulses, the go-wide token strategy and the go-tall single-threat investment. It rewards a board where everything is expendable except the one creature you keep aloft.