From BRWiki

D20

This article is a D20 reference page The System Reference Document is a comprehensive toolbox consisting of rules, races, classes, feats, skills, various systems, spells, magic items, and monsters compatible with the d20 System version of Dungeons & Dragons and various other roleplaying games from Wizards of the Coast.

D20

CENTIPEDE SWARM

COMBAT

A centipede swarm seeks to surround and attack any living prey it encounters. A swarm deals 2d6 points of damage to any creature whose space it occupies at the end of its move.

Distraction (Ex): Any living creature that begins its turn with a centipede swarm in its space must succeed on a DC 13 Fortutude save or be nauseated for 1 round. The save DC is Consitution-based.

Poison (Ex): Injury, Fortitude DC 13, initial and secondary damage 1d4 Dex. The save DC is Consitution-based.

Skills: A centipede swarm has a +4 racial bonus on Spot checks and a +8 racial bonus on Climb checks, and uses its Dexterity modifier instead of its Strength modifier for Climb checks. A centipede swarm has a +8 racial bonus on Climb checks and can always choose to take 10 on a Climb check, even if rushed or threatened.

SEE WIKIPEDIA ENTRY: Centipede

System Reference Document -> List of Creatures (SRD)