This is a mirror-ish matchup where the key differentiator is Basking Broodscale's Eldrazi Spawn generation, Blade of the Bloodchief's counters, and card-advantage engines like Ancient Stirrings and Malevolent Rumble. Disruptor Flute can be named on Basking Broodscale to tax it by {3} and shut off its adapt activation, or on Malevolent Rumble to make it much more expensive. Liquimetal Coating can turn a key permanent such as their Urza's Saga into an artifact until end of turn, which lets Karn, the Great Creator's static ability stop its activated abilities for that turn. That makes it a reasonable one-of swap. Dismember stays in: it kills Basking Broodscale (a 2/2), Sowing Mycospawn (3/3) and Haywire Mite cleanly. It can't target Emrakul, the Promised End (protection from instants) and doesn't kill Devourer of Destiny (6/6) or Sire of Seven Deaths (7/7), so save it for the small creatures and lean on Kozilek's Command for bigger targets. The slots to give up are Giant's Boulder, which is the most expendable card here. Keep in mind that our own Kozilek's Command remains the premium removal and card-advantage spell. The sideboard Trinisphere stays out of the main deck so Karn, the Great Creator's -2 can still fetch it later.