Pocketful Of Vipers

Conjuration (Summoning)
Level: Druid * 3, Hunter * 3, Ranger * 3, Shaman * 3, Warlock * 3
Components: V, S, M (a snake scale and fang)
Casting Time: 1 round
Range: touch
Target: object touched
Duration: 1 hour/level or until discharged (D)
Saving Throw: Fortitude negates (object)
Spell Resistance: no
  You set a magical ward upon the Object touched, which must be a container such as a pouch, bag, backpack, or pocket. If any creature opens the container without first speaking a command word, 1d3 summoned venomous snakes (Pathfinder RPG Bestiary 255) appear, slithering out of the container and attacking that creature for 1 round/level before disappearing. They attack other creatures only if they themselves are attacked.