Jeskai Manufacturing runs a nonbasic-saturated manabase (Sacred Foundry, Shattered Sanctum, Starting Town, Stormcarved Coast), so Sunspine Lynx's ETB trigger punishes them hard while shutting off lifegain from things like Candy Trail. Ark of Hunger's repeated drain adds up over a long grindy artifact game and helps race their Weapons Manufacturing token generation. Ball Lightning, Flashback, and Choreographed Sparks are too narrow against their go-wide artifact tokens, and Boltwave's 3 damage to the opponent alone is less impactful than steady incremental damage from Ark of Hunger against a deck that can stabilize behind Pinnacle Starcage. Focus removal on Legion Extruder and Cryogen Relic to slow their value engine.