exile deck mtg commander Prosper, Tome-Bound TREASURE Cards from Magic Custom if your Commander deck is in Chinese MtG Trading Card Game: Commander

Though, if you're looking for a more surefire way to win from within your fort, the combo route is tried and true

With the right mix of creatures and token-makers, your opponents will struggle to handle the volume of -1/-1 counters heading their way, making it hard for their own creatures to take a foothold and deal any meaningful damage

Between this and the philosophy that multicolor cards can draw upon multiple parts of the color pie for their effects, the roles of multicolor cards are somewhat more malleable than those of their monocolor counterparts, as recently demonstrated by Wizards of the Coast when designing the colleges of Strixhaven

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If the ability appears as an activated ability it has to have the fun play this ability only any time you could play a sorcery (or whatever the latest version is templating, run away!) text