Creed's Endeavor

This land can't be enchanted.
{t}: Add {1} to your mana pool. You may choose
to pay {2}{u}{g} to untap this card. (This effect activates after the card is tapped.)
Whenever this card is tapped during your turn,
put a +1/+1 counter on creatures you control
until your next untap step. If you tap this card
at least four times this turn, you may sacrifice
this card. If you do, creatures you control gain
three +1/+1 counters, haste, and trample.