Amulet Titan is a combo-ramp deck that wins by assembling Amulet of Vigor with bounce lands to accelerate Primeval Titan into play, then tutoring Boseiju and Hanweir Battlements or simply attacking for lethal. Their clock is extremely fast — a turn-two or three Titan is common — so you need to race or disrupt them. Endurance is your most important sideboard card: its flash makes it a surprise blocker that shuts off Titan attacks, and its enters-the-battlefield ability can reset their graveyard against Aftermath Analyst recursion and Green Sun's Zenith cycling. Emrakul is your best racing threat since taking their turn means you can tap Titans down or use their Scapeshift as a kill. Surgical Extraction on a binned Primeval Titan or Scapeshift can be game-winning. Slumbering Trudge and the utility lands come out since the match is decided on speed, not incremental advantage.