Seedborn Muse

Other green creatures you control get +1/+1.

Other blue creatures you control get +1/+1.

Untap all green and/or blue creatures you control during each other player's untap step.

Untap each creature you control with a +1/+1 counter on it during each other player's untap step.

Untap all creatures and lands you control during each other player's untap step.

You may cast creature spells as though they had flash.

Trample

Whenever this creature attacks, if defending player controls no black permanents, it doesn't untap during your next untap step.

At the beginning of each end step, each player gains control of all nontoken permanents they own.

This creature gets +1/+1 for each untapped permanent your opponents control.