Amulet Titan's plan hinges on cheap ramp permanents (Arboreal Grazer, Amulet of Vigor, Simic Growth Chamber) followed by Scapeshift or Primeval Titan for a fast bounce-land or land-based kill. Engineered Explosives at X=0 or X=1 clears their glut of cheap enablers before they can chain into a big turn. Consign to Memory answers Amulet of Vigor and key triggered abilities like Primeval Titan's entry trigger cheaply when it matters. Into the Flood Maw and Stern Scolding are weak since primary threat Primeval Titan is too big for Stern Scolding and bouncing a land-based combo piece rarely costs them real tempo; the extra Stock Up helps you find action in a grindier, land-heavy long game.