Red Deck Wins is a pure race — they aim to burn us out before Tron comes online, so every card must either accelerate our assembly or buy survival time. Desert comes in as a land that deals 1 damage to attacking creatures, letting us ping away Voldaren Epicure, Goblin Bushwhacker tokens, and other small bodies without spending cards; it replaces the two lands we trim that have no impact on this matchup. Apostle's Blessing protects our threats — especially Wretched Gryff and Maelstrom Colossus — from Lightning Bolt, Galvanic Blast, and Chain Lightning, ensuring our finishers stick rather than getting burned out after we tap down to cast them. We cut most of our Scour from Existence copies because 7 mana is too slow to answer a 1-drop in a meaningful way — by the time we can cast it, we're either winning on board or already dead. Ulamog's Crusher comes out for the same reason: our primary win conditions are the 6-mana threats we can already cast off Tron, and our life gain suite (Candy Trail, Lembas, Radiant Fountain) should provide enough cushion to stabilize once we untap with Tron assembled.