Herald of Squirrels

When Herald of Squirrels enters the battlefield,
put a number of 1/1 green Squirrel creature
tokens onto the battlefield equal to the number
of lands you control.
Other squirrels you control get +1/+1.
"On my way with fourteen of my friends to go and kill Emrakul!"
-Chitters, Pyromaniac of the Squirrel Conclave