Roaming Mox Hunter

At the beginning of your upkeep, create X
treasure tokens, where X is the total amount
of mana you spent on artifacts this turn.
They're a artifacts with "{t}, Sacrifice this
artifact: Add one mana of any color.")

"Ooh-A Tolarian pearl in Zendikar. Oh,
and rubble from a Ravnican building.
This place is full of stuff."