Y'shtola, Night's Blessed is the engine of this deck, draining opponents' life totals by repeatedly casting high-mana-value noncreature spells to trigger her 2-damage ping, while drawing cards whenever enough life is lost to keep the engine churning. The deck amplifies this drain strategy with mass life-loss spells like Exsanguinate and Debt to the Deathless, and accelerates toward explosive turns through a dense suite of mana rocks. The copy-and-clone theme runs deep, using spells that double creatures and permanent abilities — including Roaming Throne and Mirror Room's Fractured Realm to trigger Y'shtola's ability multiple times — while commander-cost-matters payoffs like Skull Storm and Font of Magic reward recasting her from the command zone for devastating late-game finishes.

Curiosity Did Not Kill the Cat decklist

• 3× Island
• 2× Plains
• 2× Swamp
• Arcane Signet
• Command Tower
• Exsanguinate
• Sakashima the Impostor
• Sol Ring
• Chromatic Orrery
• Peer into the Abyss
• Fellwar Stone
• Dimir Signet
• Exotic Orchard
• Orzhov Signet
• Underground River
• Temporal Mastery
• Thought Vessel
• Echo Storm
• Adarkar Wastes
• City of Brass
• Bloodstained Mire
• Flooded Strand
• Godless Shrine
• Watery Grave
• Gilded Lotus
• Decree of Pain
• Toxic Deluge
• Marsh Flats
• Misty Rainforest
• Scalding Tarn
• Verdant Catacombs
• Mana Confluence
• Polluted Delta
• Windswept Heath
• Caves of Koilos
• Talisman of Progress
• Talisman of Dominance
• Reflecting Pool
• Cavern of Souls
• Hallowed Fountain
• Dig Through Time
• Arid Mesa
• Azorius Signet
• Commence the Endgame
• Spark Double
• Prismatic Vista
• Talisman of Hierarchy
• Shark Typhoon
• Rise of the Dark Realms
• Kindred Discovery
• Skull Storm
• Debt to the Deathless
• Mnemonic Deluge
• Sakashima of a Thousand Faces
• Commander's Insight
• Inkshield
• Otawara, Soaring City
• Raffine's Tower
• Irenicus's Vile Duplication
• Font of Magic
• Black Market Connections
• See Double
• Press the Enemy
• Raise the Palisade
• Roaming Throne
• Chimil, the Inner Sun
• Meticulous Archive
• Shadowy Backstreet
• Undercity Sewers
• Unexplained Absence
• Heartless Conscription
• Monumental Henge
• Horizon of Progress
• Mirror Room // Fractured Realm
• Clever Concealment
• Breach the Multiverse
• Galadriel's Dismissal
• Multiversal Passage
• The Soul Stone
• The Clone Saga
• Spirit Water Revival
• Ember Island Production
• Mirrorform
• Abundant Countryside
• Dream Harvest
• Mathemagics
• Irma, Part-Time Mutant
• Here Comes a New Hero!
• The Mind Stone
• Multiversal Incursion
• Loki, Lord of Misrule
• Taskmaster, Mercenary Mimic
• Quantum Misalignment
• Chameleon, Master of Disguise
• Flash Photography