At the beginning of your end step, put a loyalty counter on another target planeswalker you control.
+1: Create a 1/1 red Wizard creature token with "{T}: Add {R}. Spend this mana only to cast a planeswalker spell."
−3: You draw X cards and Commodore Guff deals X damage to each opponent, where X is the number of planeswalkers you control.
Commodore Guff can be your commander.
Commodore Guff has 2 listed printings; the most valuable is the printing from CMM at US$28.76 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
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