Talk:Shadow Creature/@comment-162.232.246.7-20151031021605/@comment-179.178.155.191-20151117234838

Congratulations, you found a nightmare fissure, they spawn crawling nightmares and nightmarebeaks, they are slightly different from their "terror" equivalents, the "nightmares" attack regardless of your sanity

If your sanity is low but still not in the "insane" it's VERY dangerous to attack even a single "nightmare" because the "terrors" will be aggro-ed, once i did that in lower sanity, there was only 1 "nightmare", but when i attacked it, 5 or 6 "terrors" got aggro-ed because they were already there, just not very visible and not aggresive since my sanity was still above 30