Spiritual Asylum 
Enchantment
Creatures and lands you control have shroud. (They can't be the targets of spells or abilities.) When a creature you control attacks, sacrifice this enchantment.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL