Dimir Control has no red cards and no real artifacts besides the artifact creatures Baleful Strix and Mukotai Ambusher, so Gorilla Shaman is only a marginal body here rather than a true artifact-hate card (its ability can't target creatures), but it still adds a cheap, expendable creature for Rally tokens to pump. Relic of Progenitus can exile their graveyard to blunt Plunder the Trollshaws flashback, though it's a minor effect against this list. The real plan is to race: counterspells like Counterspell and Spellstutter Sprite and removal like Snuff Out and Cast Down punish going big on one threat, so keep deploying multiple cheap bodies and force them to answer everything. Chain Lightning is a weak single target removal spell against a deck with few relevant creatures to kill, so trim it slightly for more resilient threats.