Scales of Cradle & Coffin

Scales of Cradle & Coffin enters the battlefield
with X +1/+1 counters on it.
{1}, Remove a +1/+1 counter from Scales of
Cradle & Coffin: Regenerate
{2}: Put a +1/+1 counter on Scales of Cradle
& Coffin. Activate this ability only once per turn.
{3}: Sacrifice Scales of Cradle & Coffin. Destroy
each nonland permanent with mana cost less
than or equal to the number of +1/+1
counters on it.