Sunspine Lynx is the main upgrade here. It punishes their nonbasic lands (Escape Tunnel, Fabled Passage, Ba Sing Se) with damage on entry, though it also hits you for your own nonbasics, so weigh that when racing. Since players can't gain life, it also shuts off the life gain from Esper Origins. Torpor Orb stays in the sideboard: it only stops abilities triggered by creatures entering, and their landfall triggers come from lands entering, so it does nothing against Mossborn Hydra, Mightform Harmonizer, Sazh's Chocobo or Icetill Explorer. It would also switch off Sunspine Lynx's own enters trigger. Wild Ride is a worse topdeck against their bigger bodies and ramp, and Hearth Elemental is too slow and clunky against a deck that curves out with efficient threats, so both are trimmed to make room for the Lynxes.

Torpor Orb shuts off the enters-triggered value on Floodpits Drowner's tap/stun, Dream Beavers' drain and scry, and Spyglass Siren's Map, which is real disruption against this value-grindy deck. Self-Destruct can snipe a 1/1 Spyglass Siren or finish off a damaged blocker in combat. Dreadmaw's Ire is weak here since its artifact-destruction clause rarely has a target and the deck is light on good attack targets for the opponent's removal-heavy plan; Impolite Entrance's card draw is nice but least impactful card to trim. Keep the core aggro plan intact and just race before Kaito or Enduring Curiosity take over the grind.

This is a slower midrange grind with some removal (Requiting Hex, Stir Up Trouble) and incidental damage dealers, so Pick Your Poison gives you flexible options: its -2/-2 mode can wipe their small creatures like Gene Pollinator, Greedy Freebooter, or Callous Inspector, but it takes the whole 4 points of the spell and hits your own creatures too, so use it deliberately. When you'd rather build your board, the counter and Snake modes are there instead. Snakeskin Veil protects your key threats like Emberheart Challenger or Slickshot Show-Off from their targeted removal (Requiting Hex, Stir Up Trouble) while also growing them. Masked Meower's card filtering is low-impact against a grindier matchup where you want bigger, protected threats, and Wild Ride is cut down since it doesn't generate card advantage to keep pace in a longer game. Keep your prowess/spells package intact to pressure their early turns.