Toxic Gift

Necromancy [poison]
Level: Antipaladin* 2, Artificer * 3, Sorcerer */Wizard * 3
Components: V, S
Casting Time: 1 Standard Action
Range: touch
Target: living creature touched
Duration: instantaneous; see text
Saving Throw: Fortitude negates, see text
Spell Resistance: yes
  You can cast this spell only if you are currently poisoned. You draw upon the poison in your body and duplicate its effects in the target, which is affected by the same poison you are, except it uses this spell's DC instead of the poison's normal DC. If you are affected by more than one poison, you must choose one to afflict upon the target.