OSE Monster: Aboleth

ABOLETH

Evil, very intelligent, amphibious creatures. Dwells in underground lakes and caverns of the Underworld. Feed on the brains of humanoids. 

AC 4 [15], HD 8*** (36hp), Att 1 × mental power (see right) or 4 × tentacle (1d6 + disease), THAC0 12 [+7], MV 30’ (10’) / 180’ (60’) swimming, SV D8 W9 P10 B10 S12 (8), ML 11, AL Chaotic, XP 2,300, NA 1d4 (1d4), TT F

▶ Disease: Victims must save vs. spells or their skin transforms into a membrane in 1d6+1 rounds.  They must stay damp with water or take 1d12 damage per turn. Cure disease reverses the skin transformation.

▶ Mucous cloud: While underwater, creatures within 5’ of an aboleth must save vs. poison or gain water breathing, but lose air breathing, suffocating in 2d6 rounds. This effect is neutralized by cure disease, soap, or wine.

▶ Water breathing: Can bestow the ability to breathe water upon an enslaved creature. Lasts for 1d3 hours, then must be refreshed. 

▶ Mental powers: Each can be used three times per day:

  a. Illusion: Visual and audial. Concentration required. Remains until touched or dispelled.

  b. Mind enslave: A target within 30’: save vs. spells or become a mind slave. In a mile away, victims may save daily to break free. Remove curse, dispel magic, or the aboleth’s death releases the victim. 

Note: Adapted from Monster Manual II (AD&D 1e).