King Macar, the Gold-Blessed

Inspired —Whenever King Macar, the
Gold-Blessed becomes untapped, you may have
each player create a colorless artifact token
named Gold that has "Sacrifice this artifact: Add
one mana of any color."
Whenever an opponent sacrifices an artifact, you
may create a colorless artifact token named Gold
that has "Sacrifice this artifact: Add one mana of
any color."