Gholrok, Antithesis of Life

Flying, Deathtouch, Trample
When Gholrok, Antithesis of Life enters the battlefield, destroy all green nonland permanents.
When an opponent casts a creature spell, create a
4/4 red and black Dragon creature token with
flying and deathtouch
The clouds and ash broke open to reveal a terrifying
form, and all life nearby began to wither and rot.