Creating Your Protective Dome
The 
Sanctuary Nexus is a defensive structure that protects your base and gear. To activate it, craft and place the Nexus block on the ground, then surround it with Evolution Lure blocks in a flat five-by-five square pattern. All 24 lure blocks must sit on the exact same level as the center block—any height difference will prevent activation.
Once properly arranged, the protective dome activates automatically. This structure works alongside your combat gear and summoned allies to create a fortified position against late-game threats from parasites and other dangerous mobs.