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For example, you can cast a sorcery with madness if you discard it during an opponent's turn

If poison-proliferate control takes off, this is a great way to remove creatures while furthering your ultimate win-con simultaneously, and that can make this a somewhat reasonable option but probably only for that kind of deck

Top Chase Cards & Current Market Prices Prices are sourced from Japanese secondary markets including SNKRDUNK Akihabara and major TCG retailers, as of early March 2026

You're already aiming for a mana advantage by hitting a higher-cost artifact, but Mutation throws in a small army of creatures too