NPCs composing that spawngroup :

Corrupted_Knight (95%)

Deathbone_Archmagus (1%)

Elite_Corrupted_Knight (1%)

Elite_Death_Knight (1%)

Firebone_Archmagus (1%)

Pestilence_Archon (1%)

NPCs spawning around that spawngroup :
(Max range : 200)

codecay2000021, range=34 (-113,384,-54)

#_Carprin_Deatharn (100%)

codecay2000044, range=123 (-106,269,-59)

codecay2000045, range=181 (-3,275,-59)

codecay2000052, range=175 (18,445,-54)

codecay2000053, range=159 (-28,491,-54)

codecay2000054, range=107 (-141,492,-54)

codecay2000055, range=63 (-158,448,-54)

codecay2000056, range=122 (-32,344,-59)

codecay2000057, range=69 (-78,385,-59)

codecay2000059, range=32 (-155,353,-59)

codecay2000060, range=76 (-143,309,-59)

codecay2000106, range=104 (-84,468,-54)

codecay2000113, range=88 (-79,328,-59)

codecay2000125, range=169 (-42,252,-59)

codecay2000144, range=139 (-66,271,-59)

codecay2000148, range=192 (-84,202,-74)

codecay_275202, range=191 (-99,200,-261)