Runed Halo 
Enchantment
As this enchantment enters, choose a card name. You have protection from the chosen card name. (You can't be targeted, dealt damage, or enchanted by anything with that name.)
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL