Erynthul, God of Envy

Indestructible
Erynthul, God of Envy can't attack or block
unless it has a +1/+1 counter on it.
{3}{g}{t}: Double the number of +1/+1 counters
on target creature.
{x}{u}: Remove X +1/+1 counters from target
creature you control, then draw X cards.