Sunspine Lynx punishes their nonbasic-heavy manabase (Castle Doom, Floodfarm Verge, Hallowed Fountain and their other dual and utility lands) for a burst of damage on entry, which is especially strong against a deck that's trying to grind out value slowly. Only lands count for this, so their artifacts like Repurposing Bay, Candy Trail and Simulacrum Synthesizer add nothing. Stingcaster Mage's flashback trigger is low-impact here since this matchup rewards raw damage output over incremental card advantage, making it the easiest cut. Watch for Day of Judgment (one main deck copy, with more possible after sideboarding) and Pinnacle Starcage, which can strand small creatures, so try to spread damage across burn spells and creatures rather than overcommitting the board. Their deck is slow to assemble a defense, so prioritize early aggression before they stabilize with artifacts like Spring-Loaded Sawblades.