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Peter Pan Pirates Bane Part of me feels like its about darn time for a six-cost Floodborn Peter Pan
Theres the obvious benefit that youre getting some free creatures to swing with for one turn, but Mirror March lets you cash in on multiple effects that trigger when that creature enters the battlefield

Acid-Spewer Dragon Acidic Slime Acidic Slime Aether Poisoner Aetherblade Agent Agent of the Fates Ahriman Akroma, Vision of Ixidor Alela, Artful Provocateur Alpharael, Dreaming Acolyte Ambush Viper Anhelo, the Painter Animus of Predation Ankle Biter Ankle Shanker Aphelia, Viper Whisperer Aragorn, Company Leader Archetype of Finality Archpriest of Shadows Argivian Avenger Arisen Gorgon Armed Assailant Arno Dorian Arnyn, Deathbloom Botanist Arvad the Cursed Ashnod the Uncaring Ashnod, Flesh Mechanist Assassin Initiate Astarion, the Decadent Atraxa's Skitterfang Atraxa, Grand Unifier Atraxa, Grand Unifier Atraxa, Praetors' Voice Aurora of Emrakul Aveline de Grandpr Aven Heartstabber Avenger of the Fallen Axebane Ferox Ayli, Eternal Pilgrim Baleful Eidolon Baleful Strix Bane-Marked Leonin Barrowgoyf Battlefly Swarm Bebop, Skull & Crossbones Bilious Skulldweller Bitterblade Warrior Bitterheart Witch Black Waltz No