Grixis Affinity's two biggest threats to your combo are Krark-Clan Shaman, which can sacrifice artifacts to ping your entire board mid-combo attempt, and Galvanic Blast, which kills Tireless Tribe or Sneaky Snacker at instant speed with metalcraft active. Electrickery handles the Shaman cleanly as a 1/1, while Shenanigans and Thraben Charm provide recurring and flexible artifact disruption to slow their clock and reduce their metalcraft count. Abandon Attachments is largely dead here since their creatures don't carry equipment or enchantments, and Sandstorm Eidolon's tap-to-fog effect is far less relevant against a deck that wins through artifact recursion and ETBs rather than a pure combat damage race. Your game plan stays the same — assemble Tireless Tribe or Sneaky Snacker plus Inside Out as quickly as possible, using your disruption to buy the turns you need rather than trying to grind them out.