4c Artifacts leans on cheap artifacts and engines; Curious Farm Animals can sacrifice to destroy an artifact like Simulacrum Synthesizer while also gaining life (it can't destroy The Mind Stone, which is indestructible). Seam Rip can exile key low-cost artifacts such as Candy Trail, Cryogen Relic, or The Mind Stone (mana value 2 or less) before they generate value, and since it exiles rather than destroys, it handles The Mind Stone too. Starscape Cleric and Essence Channeler are cut as they contribute little against a grindy artifact shell that doesn't race hard and can out-value small bodies over time.