MULE

Haste
MULE enters the battlefield with 2 time
counters on it. At the beginning of each upkeep,
remove a time counter from it. When MULE
has no time counters on it, sacrifice it.
{t} : Add {1} to your mana pool. Add {2} instead
if you control a Minerals. Add {3} instead if you
control a Gold Minerals.