Mintreo, the mind of one

lifelink, fear, flying
partner with Fion, mind of one
when ever you gain life put a +1/+1 counter on Mintreo, the mind of one.
Mintreo enters with X +1/+1 counters on it.
{w}, remove a +1/+1 counter from Mintreo.
put a +1/+1 counter on each creature you control.