4c Artifacts leans on noncreature artifacts like Simulacrum Synthesizer and Candy Trail for value, and removal like Perilous Snare and White Auracite to answer our threats. Torpor Orb only stops abilities triggered by creatures entering, so it would not turn off their artifact enters-the-battlefield triggers (the scry 2 on Synthesizer and Candy Trail still happens), and it has been removed from the plan. Sheltered by Ghosts comes in instead: its exile effect can take out Perilous Snare, White Auracite, or Pinnacle Starcage, which returns anything they exiled, and the enchanted creature gains lifelink and ward {2}, which makes it harder for their targeted removal to deal with. Esper Origins is cut since it's a slower value card that doesn't keep pace with their artifact-based board development. The landfall core remains untouched, as going wide and tall is still our best way past their removal suite (Perilous Snare, Day of Judgment), though avoid overcommitting into Day of Judgment.