Perception or glowing red enemies

[HeathenSkin]

Hi all, playing as a necromancer this time. went down to floor 3 and i can see enemies highlighted in red for some reason. i have nothing cast...do i have some sort of perception bonus....like seeing trapped barrels and chests but with enemies. its kinda annoying because i dont know where its coming from. at first i thought it was a texture glitch or something. what is causing it?

[Juggernought]

SCROLL OF INFRAVISION. or MURKY POOL shrine Casts Infravision (monsters out of visual range gain red overlay)

[HeathenSkin]

oh thanks it was probably Murky pool. Havnt had the issue since and touch about every shrine and.