Y'shtola, Night's Blessed drives an Esper noncreature-spell drain deck. Every artifact, enchantment or instant at mana value 3 or more makes Y'shtola deal 2 damage to each opponent and gain 2 life. A wall of lifegain-to-drain converters turns each point of that life into more life loss for the table. The 4-life end-step draw from Y'shtola, along with similar life-loss and opponent-cast draw engines, keeps the hand full while cost reducers, rocks and taxing stax pieces let the deck chain spells and stay safe behind the drain. How it wins: Opponents bleed out from repeated Y'shtola and Papalymo pings, amplified by converters that turn every life gained into life lost, or the deck assembles the Aetherflux Reservoir plus Exquisite Blood loop (or Sanguine Bond with Exquisite Blood) for an instant kill, with Exsanguinate and Bolas's Citadel as big finishers. Key roles: - Spell-cast drain triggers: Cheap and big noncreature spells each ping every opponent and gain life. Y'shtola triggers on mana value 3 or more and Papalymo on any noncreature spell, while Delney doubles the triggers of these low-power creatures, Y'shtola included. (Papalymo Totolymo, Delney, Streetwise Lookout, Aetherflux Reservoir) - Lifegain-to-drain converters: Several permanents turn every life gained into matching life loss for an opponent. Paired with the reverse converter, this produces a two-card infinite loop, and each converter also doubles the value of every incidental lifegain trigger. (Exquisite Blood, Sanguine Bond, Vito, Thorn of the Dusk Rose) - Life-loss card engines: Draws trigger off opponents losing life or casting noncreature spells, so the drain plan refuels itself. Draw-punishing pieces add more drain and Treasure on top. (Sygg, River Cutthroat, Rhystic Study, Sheoldred, the Apocalypse) - Opponent tax and punishment: Taxing effects make opponents bleed or pay when they cast noncreature spells or draw, which feeds the life-loss draw thresholds and the converters. (Kambal, Consul of Allocation, Talion, the Kindly Lord, Smothering Tithe) - Cost reduction and mana: Rocks, rituals and spell discounts let the deck cast several 3+ mana value spells per turn for repeated triggers and storm-style Reservoir gains. Clone sorceries can copy Y'shtola or Papalymo to double the drain. (Lyse Hext, Alisaie Leveilleur, Quantum Misalignment) - Free interaction and pillow fort: Commander-dependent free spells, counters and attack taxes protect the engine. Many of them cost 3 or more and so still trigger Y'shtola even when cast for free. (Fierce Guardianship, Deadly Rollick, Propaganda)

Y'shtola, Night's Blessed decklist

• Aetherflux Reservoir
• Arcane Signet
• Bolas's Citadel
• Decanter of Endless Water
• Fellwar Stone
• Relic of Legends
• Sol Ring
• Talisman of Dominance
• Talisman of Hierarchy
• Talisman of Progress
• The One Ring
• Thought Vessel
• Adarkar Wastes
• Arcane Sanctum
• Caves of Koilos
• Command Tower
• Drowned Catacomb
• Exotic Orchard
• Fetid Heath
• Flooded Strand
• Glacial Fortress
• Godless Shrine
• Hallowed Fountain
• 3× Island
• Isolated Chapel
• Marsh Flats
• Morphic Pool
• Otawara, Soaring City
• 2× Plains
• Polluted Delta
• Prairie Stream
• Raffine's Tower
• Reliquary Tower
• Sea of Clouds
• Sunken Hollow
• Sunken Ruins
• 3× Swamp
• Underground River
• Vault of Champions
• Watery Grave
• Alisaie Leveilleur
• Delney, Streetwise Lookout
• Emet-Selch of the Third Seat
• Enduring Tenacity
• Esper Sentinel
• Grand Abolisher
• Kambal, Consul of Allocation
• Lotho, Corrupt Shirriff
• Lyse Hext
• Papalymo Totolymo
• Sheoldred, the Apocalypse
• Sygg, River Cutthroat
• Talion, the Kindly Lord
• Vito, Thorn of the Dusk Rose
• Authority of the Consuls
• Black Market Connections
• Bloodchief Ascension
• Curiosity
• Exquisite Blood
• Ghostly Prison
• Helm of the Ghastlord
• Ophidian Eye
• Propaganda
• Rhystic Study
• Sanguine Bond
• Smothering Tithe
• Anguished Unmaking
• Counterspell
• Cyclonic Rift
• Dark Ritual
• Deadly Rollick
• Dismember
• Enlightened Tutor
• Fierce Guardianship
• Flawless Maneuver
• Force of Negation
• Force of Will
• Frantic Search
• Sink into Stupor // Soporific Springs
• Snuff Out
• Swords to Plowshares
• Teferi's Protection
• Unwind
• Vampiric Tutor
• Void Rend
• Teferi, Time Raveler
• Demonic Tutor
• Exsanguinate
• Farewell
• Irenicus's Vile Duplication
• Quantum Misalignment
• Swamp
• Island
• Plains