Orb of Avarice

Orb of Avarice comes into play with 5 greed
counters on it. If there are no greed counters
left on Orb of Avarice, exile it.
Any time you tap a basic land for mana, you
may add an additional {c} to your mana pool
and gain 1 life. If you do, remove a greed
counter from Orb of Avarice.