Harvest

Group stand (This card can only e cast attached
to another creature. You may pay the mana cost
to create another of these card attached to the
same creature.Either the stands or the creature
the are attached to may attack, block, or use
activated abilities.)
Tap 5 "Harvest": Create a colorless Treasure
token artifact with "Sacrifice this artifact:
add one mana of any color to you mana pool."