Usk, Swarm Strategist

Rat creatures you control have fear.
Goblin creatures you control have swampwalk.
{t}{b}: Create X 1/1 black Rat creature tokens,
where X is the number of Rats you control.
{t}{r}: Create X 1/1 red Goblin creature tokens,
where X is the number of Goblins you control.
"Usk may be an ogre, but he's got a soft spot for the
little guys. Just don't make him angry, or he'll turn
you into his next pet.