This is a five-color Mutant/Ninja/Turtle tribal aggro deck built on +1/+1 counters. Heroes in a Half Shell attacks immediately with evasion, and each time its tribe connects it grows every creature that dealt damage and draws a card. The deck stacks counter doublers and adders onto a stream of counter sources and Mutagen tokens. Then it converts those counters into extra damage, evasion and card draw, snowballing a wide, ever-growing board. How it wins: It swings with oversized, evasive tribal creatures, using damage doubling, double strike, extra combat phases and half-life drains to kill opponents in one or two big attacks. Key roles: - Counter amplification: replacement effects and multipliers turn every small counter placement, including the commander's combat trigger, into a much larger one (Doubling Season, Hardened Scales, Corpsejack Menace). - Counter and Mutagen generation: tokens, attack triggers and enter-the-battlefield effects spread counters across the team and leave Mutagen tokens to spend later. Token doubling adds extra Mutagens, and leave-the-battlefield triggers refill them (Michelangelo, Mutant BFF, Mutagen Man, Living Ooze, Leatherhead, Iron Gator). - Counter payoffs: creatures with counters gain doubled damage, flying, blocking restrictions and card draw, and counter placement can also ping opponents directly (Raphael, the Muscle, Casey Jones, Back Alley Brute, Ray Fillet, Wave Warrior). - Combat multipliers and finishers: double strike, an untap plus an extra combat, and half-life drains from Ninjas compound the commander's trigger and end games fast (Raphael, the Nightwatcher, Raph & Leo, Sibling Rivals, Shredder, Shadow Master). - Tribal card flow: casting Turtles off the top of the library, sneaking or cheating creatures in, and the commander's draw trigger keep threats coming, with Splinter doubling Ninja triggers (Mikey & Don, Party Planners, Michelangelo, Improviser, Splinter, Radical Rat). - One-sided board control: sweepers and bounce effects that the counter-laden board survives or rebuilds from, alongside fight effects powered by large creatures (Wave Goodbye, Vigor, Super Combo).

Heroes in a Half Shell decklist

• Arcade Cabinet
• Arcane Signet
• Chromatic Lantern
• Coin of Mastery
• Everything Pizza
• Sol Ring
• The Ooze
• Turtle Van
• Big Apple, 3 a.m.
• Breeding Pool
• Cinder Glade
• City of Brass
• Command Tower
• Dragonskull Summit
• Escape Tunnel
• Evolving Wilds
• Exotic Orchard
• Fabled Passage
• 4× Forest
• Grand Coliseum
• Hidden Hideout
• Hinterland Harbor
• 2× Island
• 2× Mountain
• Overgrown Tomb
• Path of Ancestry
• 2× Plains
• Rootbound Crag
• Smoldering Marsh
• Sodden Verdure
• Spire Garden
• Stomping Ground
• Sunken Hollow
• 2× Swamp
• Temple Garden
• Turtle Lair
• Undergrowth Stadium
• Vernal Fen
• April O'Neil, Live on the Scene
• Baxter, Fly in the Ointment
• Bebop, Skull & Crossbones
• Casey Jones, Back Alley Brute
• Corpsejack Menace
• Dark Leo & Shredder
• Dimension X Pizzasaur
• Donatello, the Brains
• Irma, Part-Time Mutant
• Leatherhead, Iron Gator
• Leonardo, the Balance
• Lita, Little Orphan Amphibian
• Michelangelo, Improviser
• Michelangelo, Mutant BFF
• Michelangelo, Weirdness to 11
• Michelangelo, the Heart
• Mikey & Don, Party Planners
• Mikey & Leo, Chaos & Order
• Mona Lisa, Science Geek
• Mutagen Man, Living Ooze
• Raph & Leo, Sibling Rivals
• Raph & Mikey, Troublemakers
• Raphael, the Muscle
• Raphael, the Nightwatcher
• Ray Fillet, Wave Warrior
• Rocksteady, Mutant Marauder
• Shredder, Shadow Master
• Splinter, Radical Rat
• Splinter, the Mentor
• Super Shredder
• Vigor
• Doubling Season
• Hardened Scales
• High Score
• Level Up
• Ninja Pizza
• Rhythm of the Wild
• Together Forever
• Assassin's Trophy
• Continue?
• Double Jump // Flying Kick
• Path to Exile
• Shellshock
• Special Move
• Swift Demise
• Swords to Plowshares
• Blasphemous Act
• Cultivate
• Farseek
• Game Over
• Lessons from Life
• Super Combo
• Vanquish the Horde
• Wave Goodbye