Ragtag Recruiting

Convoke. Ragtag Recruiting enters the battlefield
with X plus two muster counters on it. Creature
spells you cast cost {1} more and have convoke.
Remove a muster counter: Until your next turn,
creature spells you cast cost {1} less and enter the
battlefield with an additional +1/+1 counter.
Remove three muster counters: Target creature
gains your choice of flying, first strike, lifelink,
or vigilance. (Permanently.)