http://www.dandwiki.com/wiki/SRD:Marilith
A marilith’s natural weapons, as well as any weapons it wields, are treated as chaotic-aligned and evil-aligned for the purpose of overcoming damage reduction.
Constrict (Ex): A marilith deals 4d6+13 points of damage with a successful grapple check. The constricted creature must succeed on a DC 27 Fortitude save or lose consciousness for as long as it remains in the coils and for 2d4 rounds thereafter. The save DC is Strength-based.
Improved Grab (Ex): To use this ability, a marilith must hit with its tail slap attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it succeeds on the grapple check, it can constrict.
Spell-Like Abilities: At will—align weapon, blade barrier (DC 23), magic weapon, project image (DC 23), polymorph, see invisibility, telekinesis (DC 22), greater teleport (self plus 50 pounds of objects only), unholy aura (DC 25). Caster level 16th. The save DCs are Charisma-based.
Summon Demon (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 ability is the equivalent of a 5th-level spell.
True Seeing (Su): Mariliths continuously use this ability, as the spell (caster level 16th).
Skills: Mariliths have a +8 racial bonus on Listen and Spot checks.
Feats: In combination with its natural abilities, a marilith’s Multiweapon Fighting feat allows it to attack with all its arms at no penalty.
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