Amulet Titan's key artifact is Amulet of Vigor, which untaps their bounce lands and powers the ramp engine. Wear // Tear's Wear half destroys Amulet of Vigor before it generates enormous value, and it also kills the Construct artifact tokens that Urza's Saga makes. Urza's Saga itself is an Enchantment Land, so Wear can't target it. Only the Tear half can, and Tear needs {W}, which just a few of our lands supply. Don't count on it as a reliable answer. Brotherhood's End's artifact mode can wipe out Construct tokens and cheap artifacts like Amulet of Vigor, though it won't touch Urza's Saga itself. Twinned Vision and Artist's Talent are too slow against a combo-ramp deck that can end the game abruptly via Scapeshift or a ramped Primeval Titan. Race them or disrupt their artifacts before they assemble their engine, since our burn can close quickly if they stumble.