Lumen, Powerstone Refractor

Sunburst

Artifacts you control enter the battlefield with a charge counter for each color of mana spent to cast it, and have "When this leaves the battlefield, put all charge counters on it onto another target artifact."

Artifact creatures you control get +1/+1 for each charge counter on it.

Remove two charge counters from Lumen: Add one mana of any color to your mana pool.