Manafang Alpha

Whenever this transforms into Manafang Alpha,
double the number of +1/+1 counters on it.
Whenever a player casts a spell, put a +1/+1
counter on Manafang Alpha.
At the beginning of each end step, if two or more spells were cast this turn, transform Manafang
Alpha. If you do, remove all X +1/+1 counters
from it and make an X/X green wolf token.
The only thing that scares him is himself.