Stunning Strike 
Enchantment — Aura
Flash Enchant creature When this Aura enters, tap enchanted creature and remove it from combat. As long as enchanted creature isn't legendary, it doesn't untap during its controller's untap step.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL