Cisizarm's Chaos

(You may cast a legendary sorcery only if you control
a legendary creature or planeswalker.)
Create 3 3/3 green beast tokens. For the rest of
the game, permanents lose hexproof and indestructible and can't gain hexproof or indestructible. Then, you may have any creatures
you control fight any target creatures you don't control.
It will all burn. As it should be.