Enrage the Grassy Tundra

Each of your endsteps, create a 3/3 Abominable
Yeti token creature.
{4}{u}{g}, This ability acts like an instant but can
only be used on your turn: Sacrifice a token
creature:
Destroy all non-land permanents unless they are
snow permanents. If you destroyed a
Planeswalker this turn you win the game.
"Only snow and ice if you do awaken them."