Divinity: Original Sin 2

Divinity: Original Sin 2

Crafting Overhaul [DE]
Pluck 26 JUL 2019 a las 0:27
Where do you find Nightmares? For the nightmare essence.
I've tried searching online for any enemy that could be the nightmare and just wanna know where to find them. I tried going into GM mode to spawn them but nothings named nightmare.