Mariliths speak Abyssal, Celestial, and Draconic.
Spell-Like Abilities: At will-animate dead, bestow curse,
chaos hammer, cloudkill, comprehend languages, darkness,
desecrate, detect good, detect law, detect magic, inflict serious
wounds, magic circle against good (self only), magic weapon,
project image, polymorph self, pyrotechnics, see invisibility,
shatter, telekinesis, teleport without error (self plus 50 pounds
of objects only), unholy aura, and unholy blight. These abilities
are as the spells cast by a 13th-level sorcerer (save DC 13 +
Improved Grab (Ex): To use this ability, the marilith must hit
a Medium-size or smaller opponent with its tail slam attack. If
it succeeds, it can constrict.
Constrict (Ex): A marilith deals 4d6+7 points of damage with a
successful grapple check against Medium-size or smaller
creatures. The constricted creature must succeed at a Fortitude
save (DC 19) or lose consciousness for at long as it remains in
the coils and for 2d4 rounds thereafter.
Summon Tanar'ri (Sp): Once per day a marilith can attempt
to summon 4d10 dretches, 1d4 hezrou, or one nalfeshnee with a 50%
chance of success, or one glabrezu or another marilith with a 20%
chance of success. This is much as though casting a summon monster spell.
Summoned creatures automatically return whence they came after 1 hour.
A tanar'ri that has just been summoned cannot use its own
summon ability for 1 hour.
Immunities (Ex): Mariliths are immune to poison and
Resistances (Ex): Mariliths have cold, fire, and acid
Telepathy (Su): Mariliths can communicate telepathically
with any creature within 100 feet that has a language.
Skills: Mariliths receive a +8 racial bonus to Listen and Spot
Feats: A marilith receives the Multidexteriry and Multiweapon
Fighting feats as bonus feats. In combination with its natural
abilities, these feats allow the marilith to attack with all its
arms at no penalty.