NPCs composing that spawngroup :

NPCs spawning around that spawngroup : (Max range : 100) necropolis_50, range=77 (1384,844,-90) an_amorphous_mass (50%) an_amorphous_mass (50%) necropolis_a_phase_spider008_31327946, range=28 (1386,748,5) a_phase_spider (100%)