Permafrost Plateau

Permafrost Plateau is a Galactic rare environment card in the Brainy class that says, "When played: make a Heights lane here. When you play a zombie here, freeze a plant."

Origins
It is based on a permafrost plateau, a landform.

With
Use this with Cryo Yeti, as it will benefit from zombies being played here. However, only Immorticia can do this normally. Rustbolt can use this with Sports Psychologist and Team Player to put more Zombies there, or Mountain Climber to give it a boost. As Super Brainz, you can use this with Zombie High Diver. All Brainy heroes can use this with Chimney Sweep. You can also use this against Grass Knuckles, as his Signature Superpower will be less effective. Beware of Lily of the Valley, as it can turn this against you. Also beware Skyshooter and Cabbage-pult, though hybrid heroes can use these to their advantage.

Against
If you are a hybrid hero, use Cryo Yeti to make the most of it. Also use Lily of the Valley, Skyshooter, and Cabbage-pult to turn this against the Zombie Hero. If you need to, you can override this with another environment.

Trivia

 * It was originally going to be a plant environment, and called Pearmafrost Plateau.