Pentad Prism 
Artifact
Sunburst (This enters with a charge counter on it for each color of mana spent to cast it.) Remove a charge counter from this artifact: Add one mana of any color.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL