X Marks the Spot

X Marks the Spot enters the battlefield with 5 exploration counters on it.
{2},{t}: Target untapped pirate you control
explores. Tap it. Remove an exploration counter
from X Marks the Spot. Then, if X Marks the
Spot has no exploration counters on it, sacrifice
it, create 3 treasure tokens and draw 2 cards.
"Start digging, boys!"