Haern, Beastcaller

When Haern, Beastcaller enters the battlefield, create a 4/4 green Bear creature token, a 3/3 red Wolf creature token, and a 2/2 blue Owl creature token.
Other creatures you control get +0/+2
{t}: Add {g}{g} to your mana pool. Spend this mana only to cast creature spells.