Mazatl, Primal Bloom

When Mazatl, Primal Bloom is cast, take control
of up to 1 target permanent under each
opponent's control for as long as Mazatl, Primal
Bloom is on the battlefield.
Whenever a creature you control deals combat
damage to an opponent, return a permanent you
control but don't own to its owner's control, and
you may cast a green creature without paying
its mana cost.