Whenever one or more creatures you control deal combat damage to a player, create a colorless Treasure artifact token with ", Sacrifice this artifact: Add one mana of any color to your mana pool."
At the beginning of your end step, if you control five or more artifacts, transform Storm the Vault.
//
(Transforms from Storm the Vault.)
: Add one mana of any color to your mana pool.
: Add to your mana pool for each artifact you control.

Artist: Victor Adame Minguez