Prism Ring 
Artifact
As this artifact enters, choose a color. Whenever you cast a spell of the chosen color, you gain 1 life.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Artifact
As this artifact enters, choose a color. Whenever you cast a spell of the chosen color, you gain 1 life.