A model who drinks a vial of the Tears of Shallaya at the beginning of a battle will be completely immune to all poisons for the duration of combat. Undead and Possessed warriors may not use the Tears of Shallaya.
There is enough liquid in a vial of the Tears of Shallaya to last for the duration of one battle.
Lore
Tears of Shallaya are vials of water from the holy spring in Couronne. Shallaya is the goddess of healing and mercy and it is said that this water has curative properties and is proof against any poison.