Mystic Forge Combo is almost entirely artifact-based, running Grim Monolith, Manifold Key, Karn, and Mystic Forge itself to chain artifact spells off the top of the library. Abrade's destroy-target-artifact mode is excellent removal for key pieces like Grim Monolith or Manifold Key, while Brotherhood's End's artifact-sweeper mode (mana value 3 or less) can wipe out Lotus Petal, Manifold Key, and Giant's Boulder in one sweep to disrupt their mana engine. Flusterstorm is less useful since this deck isn't casting a high volume of instants/sorceries in a single turn, so it comes out along with Simian Spirit Guide and Prismari Charm.