Brom, Swarm Caller

Whenever a creature with power one or less
attacks, you get an experience counter.
{g}{w}{t}: Choose one at random-
•Create a 1/1 green squirrel creature token for
each experience counter.
•Create a 1/1 black rat creature token for each
experience counter.
•Create a 1/1 white mouse creature token for each
experience counter.