Squirrel Horde

Squirrel Convoke (Your Squirrels can help
you cast this spell. Each Squirrel creature you
tap while casting this spell pays for {1} or one
mana of that creature's colour.)
Squirrel Horde enters the battlefield with {x} +1/+1 counters on it.
Squirrel Horde gets +1/+1 for each other Squirrel creature you control.