Ancestral Packmaster

When Ancestral Packmaster enters the battlefield, if there are at least 4 creature cards in your graveyard, create four 2/2 green Wolf creature tokens.
{2}{g}, Exile a creature card from your graveyard: Wolf creatures you control get +1/+1 until end of turn.
The spectral wolves of my forebears howl through me as I summon my own wolf-kin.