Elementalists Palette 76 (Commander 2021)

Whenever you cast a spell with {X} in its mana cost, put two charge counters on this artifact. {T}: Add one mana of any color. {T}: Add {C} for each charge counter on this artifact. Spend this mana only on costs that contain {X}.

NM - $5.00
LP - $4.00
MP - $3.00
HP - $2.00
DMG - $1.50