Pawamalu, Crest of the Skyborn

When Pawamalu, Crest of the Skyborn
enters the battlefield, you may sacrifice any
number of creatures. If you do, put that
many +1/+1 counters and charge counters
on Pawamalu.
{r}, {t}, remove a charge counter from Pawamalu: Pawamalu deals 2 damage to
any target.