Regular 
The subject becomes immune to poisons for the duration of the spell. For some very persistent poisons, this is only a delay of the inevitable, since traces of the poison may still be in the subject’s system when the spell ends!

Duration: 1 hour. 
Cost: 4 to cast. 3 to maintain. 
Time to cast: 10 seconds. 
Prerequisite: Vigor.

Item 
Jewelry. The item must bear a picture of a unicorn. Always on; wearer is immune to poison. A rare and prized item!  
Energy cost to create: 500 for an item that resists one specific poison, 4,000 for one that resists all poisons.