Gideon's Intervention 
Enchantment
As this enchantment enters, choose a card name. Your opponents can't cast spells with the chosen name. Prevent all damage that would be dealt to you and permanents you control by sources with the chosen name.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL