Red Deck Wins is an all-monocolored swarm deck, which makes Guardian of the Guildpact your most important card — it is completely immune to their entire burn suite and trades favorably with their creatures in combat. Prioritize finding Armadillo Cloak for the Guardian, as that combination generates life at a rate they simply cannot race and is effectively unanswerable for them. Crimson Acolyte protects your other life-gain creatures like Outlaw Medic and Sacred Cat from Galvanic Blast and Lightning Bolt, keeping your stabilization engine online. Arms of Hadar comes in as a one-sided board sweeper — nearly every creature in their deck (Voldaren Epicure, Goblin Bushwhacker, Burning-Tree Emissary, Clockwork Percussionist) dies to -3/-3, and you can find Heap Gate with Open the Gates to enable it. Malevolent Rumble and Raffine's Informant are the trimmable cards because their card-selection value is too slow when you need to establish blockers and life gain in the first few turns.