Treasure Cavern

When Treasure Cavern comes into play, create
one colorless Treasure , which is an artifact token
with "Tap, Sacrifice this artifact: Add one mana
of any color."
{t}: Add {c} to your mana pool.
Tap a creature you control {1}{t}: Create one
Treasure token
Need to stock up, Send Bob and One-Tooth back
to the cave. Captain with no economic worries.