finale mtg cards of Devastation Proxy – Gilded Goblet creatures you control get +X/+X and gain haste until end of turn. Grand Finale : r/custommagic

The payoffs (where lifegain actually wins) This is the half that makes the archetype real

Anytime you tap a Swamp for mana, you add an extra black mana to your mana pool

Full Decklist Abrade Adeline, Resplendent Cathar Ainok Strike Leader Angel of Invention Arcane Signet Aron, Benalia's Ruin Bastion of Remembrance Battlefield Forge Beetleback Chief Bitter Triumph Blade of Selves Bojuka Bog Bone Devourer Canyon Slough Castle Ardenvale Castle Embereth Caves of Koilos Chittering Witch Clifftop Retreat Command Tower Commander's Insignia Deadly Dispute Divine Visitation Dragonskull Summit Eliminate the Competition Emeria Angel Exotic Orchard Fellwar Stone Fetid Heath Gix, Yawgmoth Praetor Goldlust Triad Goldnight Commander Grand Crescendo Grenzo, Havoc Raiser Hero of Bladehold Hour of Reckoning Idol of Oblivion Infantry Shield Ironwill Forger Isolated Chapel Kaya, Geist Hunter Legion Loyalty Legion Warboss Lightning Greaves Lingering Souls Loyal Apprentice Mindblade Render Morbid Opportunist Mountain (x5) Myr Battlesphere Neriv, Crackling Vanguard Nomad Outpost Ogre Battledriver Ophiomancer Path of Ancestry Plains (x5) Redoubled Stormsinger Release the Dogs Selfless Spirit Shadow Summoning Shattered Landscape Shattered Sanctum Siege-Gang Commander Skullclamp Smoldering Marsh Sol Ring Solemn Simulacrum Stroke of Midnight Sun Titan Swamp (x5) Swords to Plowshares Talisman of Conviction Talisman of Hierarchy Temple of Silence Temple of Triumph Tempt with Vengeance Terramorphic Expanse Thalisse, Reverent Medium Tocasia's Welcome Twilight Drover Vault of the Archangel Viscera Seer Wayfarer's Bauble Will of the Mardu Windbrisk Heights Within Range Yahenni, Undying Partisan Zurgo Stormrender Temur Roar Temur love two things: big mana and bigger spells

2 Desynchronization Restart And Go Again Speaking of historic decks, here's another card that serves their strategy particularly well