Lifegain decks go wide with small value creatures (Hinterland Sanctifier, Deep-Cavern Bat, Starscape Cleric) that trigger off each other entering, so a third Day of Judgment is excellent to reset their board before Amalia Benavides Aguirre grows out of control. Strategic Betrayal removes a creature and their graveyard, denying Moseo's reanimation trigger a target. Lightning Helix's 3 life gain is largely irrelevant against a deck already gaining life faster than you can race, so it's better as removal elsewhere; Consult the Star Charts is too slow to keep pace with their steady incremental value. Keep the maindeck Negate to stop key enchantments like Lunar Convocation or Case of the Uneaten Feast from resolving.