Cataclysm - From the Vault: Annihilation

Cataclysm

Sorcery

Each player chooses from among the permanents they control an artifact, a creature, an enchantment, and a land, then sacrifices the rest.

"Keep with you only this much: your mount, your blade, and your wits. The rest you can find, build, or take."

—Horse clans' wisdom

Legalities