Anaconda

Anaconda (Giant): Init +4; Atk bite +10 melee (1d6 plus constrict); AC 18; HD 7d8; MV 30’ or swim 40’; Act 1d20; SP constriction 1d8; SV Fort +7, Ref +3, Will +2; AL N. Anacondas grow to a length of 1d20+10 feet and weigh up to 550 pounds. Giant anacondas grow 2d20+20 feet in length, and weigh proportional more. In general, every 3 feet in length gives the serpent 55 pounds in weight. Anacondas are excellent swimmers, and often attack prey in water. Victims of their bite are immediately wrapped in the anaconda’s coils, allowing the snake to do automatic damage to its victim each round thereafter, while potentially also biting the target again. It requires an opposed Strength check (vs. +10 for a normal, and +20 for a giant anaconda) to break free, or a Mighty Deed of at least 7+.