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If you have the cards to do it, play Marie Favored Kitten on turn 2, Maurices Machine on turn 3

Hapatra's Snake Factory Hapatra, Vizier of Poisons | Illustration by Tyler Jacobson Commander (1) Planeswalker (1) Creatures (33) Ammit Eternal Arbor Elf Birds of Paradise Blood Artist Boreal Druid Carnifex Demon Channeler Initiate Chatterfang, Squirrel General Craterhoof Behemoth Deathrite Shaman Devoted Druid Dusk Urchins Elves of Deep Shadow Elvish Mystic Evolution Sage Fyndhorn Elves Fynn, the Fangbearer Generous Patron Hooded Blightfang Ivy Lane Denizen Llanowar Elves Midnight Banshee Necroskitter Obelisk Spider Ohran Frostfang Sakura-Tribe Elder Seedborn Muse Seshiro the Anointed Skinrender Soul Snuffers Toski, Bearer of Secrets Wickerbough Elder Yawgmoth, Thran Physician Instants (4) Beast Within Grim Affliction Nature's Claim Second Harvest Sorceries (8) Black Sun's Zenith Cultivate Farseek Kodama's Reach Persist Reanimate Shamanic Revelation Torment of Hailfire Enchantments (9) Animate Dead Beastmaster Ascension Blowfly Infestation Crumbling Ashes Cryptolith Rite Flourishing Defenses Growing Rites of Itlimoc Nest of Scarabs Sylvan Library Artifacts (10) Arcane Signet Ashnod's Altar Golgari Signet Lightning Greaves Phyrexian Altar Skullclamp Talisman of Resilience Throne of the God-Pharaoh Viridian Longbow Whispersilk Cloak Lands (34) Access Tunnel Blooming Marsh Command Tower Darkbore Pathway Deathcap Glade Exotic Orchard Forest x8 Grasping Dunes Grim Backwoods Ifnir Deadlands Karn's Bastion Llanowar Wastes Nesting Grounds Overgrown Tomb Phyrexian Tower Rogue's Passage Swamp x8 Tainted Wood Twilight Mire Woodland Cemetery Hapatra, Vizier of Poisons gives you a theme that you almost never see supported: -1/-1 counters

1 token/ad card, Helper card, or card from "The List" (A special card from Magic's history or Universes Within card - Found in 25% of packs)
Older formats have the Urza Tron lands, Eldrazi Temple, Mutavault, Dark Depths, and the list goes on