A +1/+1 counters deck built around Atraxa's end-step proliferate. Creatures that enter with or gather counters are grown by counter placers, amplifiers and doublers, while Atraxa and other proliferate effects push every counter, including those on mana artifacts and storage lands, a step further each turn. Counters also unlock keyword lords, card draw and evasion, and a heavy suite of board wipes plus -1/-1 effects resets the table on terms where the deck's oversized, counter-laden threats recover best. How it wins: It swarms and overpowers opponents with huge creatures that gain flying, trample and double strike from their counters, often after a one-sided wipe. Key roles: - Counter amplifiers: Each counter placed becomes several, so every placement and proliferate trigger snowballs. (Hardened Scales, Corpsejack Menace, Master Biomancer) - Counter sources and growers: Creatures and enchantments put counters on the team every turn or whenever creatures enter, giving Atraxa and the amplifiers something to work on. (Cathars' Crusade, Juniper Order Ranger, Citadel Siege) - Doubling and proliferate: These multiply existing counters across the board for sudden, explosive growth beyond Atraxa's own end-step trigger. (Kalonian Hydra, Vorel of the Hull Clade, Deepglow Skate) - Counter-keyed payoffs: Creatures with counters gain flying, trample and tapping attack triggers, and they draw cards, turning a grown board into evasive damage and card advantage. (Abzan Falconer, Tuskguard Captain, Bred for the Hunt) - Counter-fueled resources: Counters are spent as mana, tokens or card draw, and proliferate refills mana rocks and creature batteries. (Ghave, Guru of Spores, Crystalline Crawler, Astral Cornucopia) - Wipes and shrink effects: Mass removal and -1/-1 sweepers clear opposing boards while counter-heavy creatures survive or are protected, with persist and death-trigger counter transfers softening the deck's own losses. (Languish, Duneblast, Cauldron of Souls)

Breed Lethality decklist

• Thrummingbird
• Festercreep
• Scavenging Ooze
• Abzan Falconer
• Orzhov Advokist
• Tuskguard Captain
• Necroplasm
• Champion of Lambholt
• Reyhan, Last of the Abzan
• Vorel of the Hull Clade
• Crystalline Crawler
• Custodi Soulbinders
• Forgotten Ancient
• Bane of the Living
• Ishai, Ojutai Dragonspeaker
• Corpsejack Menace
• Fathom Mage
• Master Biomancer
• Elite Scaleguard
• Reveillark
• Deepglow Skate
• Kalonian Hydra
• Ikra Shidiqi, the Usurper
• Vulturous Zombie
• Juniper Order Ranger
• Ghave, Guru of Spores
• Enduring Scalelord
• Manifold Insights
• Languish
• Tezzeret's Gambit
• Migratory Route
• Merciless Eviction
• Spitting Image
• Sublime Exhalation
• Duneblast
• Treasure Cruise
• Disdainful Stroke
• Solidarity of Heroes
• Grip of Phyresis
• Inspiring Call
• Mortify
• Putrefy
• Ancient Excavation
• Mirrorweave
• Sylvan Reclamation
• Sol Ring
• Fellwar Stone
• Golgari Signet
• Orzhov Signet
• Simic Signet
• Commander's Sphere
• Darksteel Ingot
• Cauldron of Souls
• Astral Cornucopia
• Hardened Scales
• Brave the Sands
• Duelist's Heritage
• Bred for the Hunt
• Citadel Siege
• Cathars' Crusade
• Arcane Sanctum
• Ash Barrens
• Azorius Chancery
• Command Tower
• Darkwater Catacombs
• Dreadship Reef
• Evolving Wilds
• Exotic Orchard
• Golgari Rot Farm
• Murmuring Bosk
• Opal Palace
• Opulent Palace
• Sandsteppe Citadel
• Seaside Citadel
• Sungrass Prairie
• Temple of the False God
• Terramorphic Expanse
• Underground River
• 2× Plains
• 2× Plains
• Plains
• 2× Island
• Island
• Island
• 2× Swamp
• 2× Swamp
• Swamp
• 3× Forest
• 2× Forest
• 2× Forest