Paralysis

The character’s claws, teeth, stinger, or hands secrete a powerful paralytic venom.
Type: Major positive.
Effect: Anyone who takes damage in mêlée from the character’s natural weapons must make a Fortitude save (DC 10 + 1/2 character level + Constitution modifier), or be paralysed for 1d6 rounds. There is no limit to how many times per day the character may use this mutation.
Biotech: Implant, Graft.