Scorpion-Tail Whip: A scorpion-tail whip is made from the dried tail of a Large monstrous scorpion, with the stinger intact. Used by some of the crueler desert tribes, the whip deals nonlethal damage except on a critical hit.
On a critical hit, the whip deals lethal damage and injects a small amount of Large monstrous scorpion venom (injury, Fortitude DC 18, initial and secondary damage 1d6 Str), which is stored in a small bladder in the stinger.
The bladder can hold only one dose at a time, and adding a dose of venom takes 1 minute. The whip can hold any other contact or injury poison (see page 297 of the Dungeon Master’s Guide for details on other poisons).
Exotic One-Handed Melee Weapon
Cost: 75 gp
Dmg (S) 1d3 Dmg (M) 1d4 Dmg (L) 1d6 (Nonlethal)
Critical: x2 (Plus Poison)
Weight: 3 lb
Damage Type: Slashing or Piercing