Elementalist's Palette 
Artifact
Whenever you cast a spell with 
in its mana cost, put two charge counters on this artifact.
: Add one mana of any color.
: Add 
for each charge counter on this artifact. Spend this mana only on costs that contain .
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL