Amphin Mutineer is a relative newcomer, and its one I gushed about in my article about 5 Blue Cards You Should Play in Commander
Beluna Grandsquall Although adventure cards are found in all colors, theyre predominantly found in Temur, so it makes sense for a legendary creature designed to head up an adventure Commander deck to be in these colors, too
You could look to this team up to cheat in massive legends, like Drakuseth, Maw of Flames, or keep things lean, focusing on cheap legends like Thalia, Guardian of Thraben that help you curve out and get haste quickly
Theres also something to be said about including various enchantments to continuously buff your board
Modular was a cool effect from the original Mirrodin block, but Reyhan, Last of the Abzan goes beyond that
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