Lifegain decks like this one gain incremental life through Hinterland Sanctifier, Amalia Benavides Aguirre, and Moseo, Vein's New Dean, so the extra Sunspine Lynx copies are crucial since they shut off all lifegain entirely while also punishing their many nonbasic lands (Concealed Courtyard, Godless Shrine, Bleachbone Verge) on entry. Obliterating Bolt cleanly exiles problem threats like Amalia or Deep-Cavern Bat before they can be recurred by effects like Moseo's Infusion ability. Kavaron Harrier is too slow to matter in a long grindy race where the opponent is gaining life every turn, and Opera Love Song's card selection is weaker than direct damage and a hard lifegain lock. Prioritize resolving Sunspine Lynx early to shut down their entire gameplan.