Amphin Mutineer

Removal in blue rarely admits it is removal, and this one hands the victim a consolation prize: the creature you exile is replaced under its controller's command by a 4/3 token. That trade is the whole strategic wrinkle. Handing an opponent a bigger body sounds like a downgrade, but exile beats the "destroy" spells at their own game, sidestepping indestructibility and shutting off death triggers before they resolve, and the replacement token strips away whatever the original creature actually did: the commander's ability, the aura it wore, the counters it carried. You are converting a specific problem into a generic 4/3, and generic 4/3s are the kind of thing blue is content to answer at leisure. Encore is the second act, and it changes the arithmetic. From the graveyard, the ability makes a copy of the Mutineer for each opponent, so a full pod means several enters triggers firing at once: multiple threats get scattered into vanilla Salamanders in a single sorcery-speed turn, with the copies swinging in and getting sacrificed at end of turn. The non-Salamander clause on the target is the load-bearing restriction: it keeps players from pointing the exile at the very tokens the Mutineer manufactures, which would otherwise launder away its own downside. The value scales with the size of the table, which is where a card built around this exile clause earns its keep.