Cario, Nature Embracer

Polymorph{4}{r/g}{r/g}{r/g}: Cario, Nature Embracer transforms into a Green 8/8 Black Bear creature with vigilance until the end of your next upkeep, then tap him.

Beats sacrifice {r}: If Cario, Nature Embracer were
to be sent to the graveyard while polymorphed, turn him back to normal instead, then tap him.

Primal rage {r}{g}: Give +2/+0 to one creature you control until end of turn.

Trying to eradicate nature, means trying to eradicate ourselves—