Sphere of Purity 
Enchantment
If an artifact would deal damage to you, prevent 1 of that damage.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Enchantment
If an artifact would deal damage to you, prevent 1 of that damage.