Lunarch Mantle 
Enchantment — Aura
Enchant creature
Enchanted creature gets +2/+2 and has ", Sacrifice a permanent: This creature gains flying until end of turn."
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL