Zaxara turns every X spell into two threats: the spell itself and a Hydra token carrying X +1/+1 counters. The deck is a pile of X-cost Hydras and X spells fed by heavy ramp and X-only mana. Counter doublers and adders multiply both the Hydras and Zaxara's tokens into lethal trampling and unblockable attackers. Unbound Flourishing doubles X on permanent spells, which makes both the creature and Zaxara's token bigger. It also copies X instants and sorceries. How it wins: It grows an overwhelming board of huge Hydras with trample or evasion and swings through, with X-powered drain finishers and a Simic Ascendancy counter win as backups. Key roles: - X-spell engine: Zaxara rewards casting anything with X, so the deck is full of X-cost Hydras and utility spells. Many of these do double duty, like card draw, tutoring the top of the library, or removal, while each one also makes a Hydra token. (Genesis Hydra, Hydroid Krasis, Voracious Hydra) - X-mana acceleration: Mana that scales or is restricted to X costs, plus land ramp, pushes X values high early and late. Big Hydras then feed Selvala's mana, which loops into bigger X. (Elementalist's Palette, Nexos, Selvala, Heart of the Wilds) - Counter multiplication: Doublers and adders stack on every Hydra entering with counters and on Zaxara's tokens. Unbound Flourishing doubles X itself, so modest spells become enormous. (Doubling Season, Unbound Flourishing, Kalonian Hydra) - Hydra value and resilience: Death triggers turn removal into cards, treasure, snakes or redistributed counters, and The Ozolith saves counters for reuse. Gargos makes Hydras cheaper and fights whenever a creature of theirs is targeted. (Lifeblood Hydra, Vastwood Hydra, The Ozolith) - Counters into cards: Placing counters or landing big creatures draws cards to refuel the stream of X spells. Terrasymbiosis only pays out once per turn. (Garruk's Uprising, Terrasymbiosis, Inspiring Call) - Evasion and alternate finishers: Unblockability and trample push the oversized board through. X drain spells end games directly, and Simic Ascendancy builds growth counters toward an upkeep win. (Herald of Secret Streams, Exsanguinate, Simic Ascendancy)

Zaxara, the Exemplary decklist

• Arcane Signet
• Astral Cornucopia
• Elementalist's Palette
• Lightning Greaves
• Sol Ring
• The Earth Crystal
• The Ozolith
• Breeding Pool
• Command Tower
• Exotic Orchard
• 8× Forest
• Hinterland Harbor
• 5× Island
• Lair of the Hydra
• Llanowar Wastes
• Opulent Palace
• Overgrown Tomb
• Path of Ancestry
• Rejuvenating Springs
• Reliquary Tower
• Rogue's Passage
• Sunken Hollow
• 4× Swamp
• Temple of the False God
• Undergrowth Stadium
• Verdant Catacombs
• Watery Grave
• Woodland Cemetery
• Yavimaya Coast
• Zagoth Triome
• Benevolent Hydra
• Capricopian
• Corpsejack Menace
• Gargos, Vicious Watcher
• Genesis Hydra
• Goldvein Hydra
• Herald of Secret Streams
• Hooded Hydra
• Hungering Hydra
• Hydroid Krasis
• Kalonian Hydra
• Lifeblood Hydra
• Managorger Hydra
• Mistcutter Hydra
• Neverwinter Hydra
• Nexos
• Nyxborn Hydra
• Primordial Hydra
• Protean Hydra
• Selvala, Heart of the Wilds
• Steelbane Hydra
• Stonecoil Serpent
• The Goose Mother
• Vastwood Hydra
• Voracious Hydra
• Branching Evolution
• Doubling Season
• Garruk's Uprising
• Hardened Scales
• Simic Ascendancy
• Terrasymbiosis
• Unbound Flourishing
• Beast Within
• Blue Sun's Zenith
• Condescend
• Erebos's Intervention
• Heroic Intervention
• Inspiring Call
• Pull from Tomorrow
• Repulsive Mutation
• Syncopate
• Thassa's Intervention
• Animist's Awakening
• Cultivate
• Curse of the Swine
• Exsanguinate
• Farseek
• Finale of Revelation
• Kodama's Reach
• Nature's Lore
• Profane Command
• Rampant Growth
• Three Visits
• Torment of Hailfire
• Villainous Wealth