Python rod
(Dungeon Master's Guide v.3.5, page 236)
Price (Item Level): 13,000 gp (13th)
Body Slot: — (held)
Caster Level: 10th
Aura: Moderate; (DC 20) transmutation
Activation: Standard (command)
Weight: 5 lb.
This rod is longer than normal rods. It is about 4 feet long and weighs 10 pounds. It strikes as a +1/+1 quarterstaff. If the user throws the rod to the ground (a standard action), it grows to become a giant constrictor snake by the end of the round. The python obeys all commands of the owner. (In animal form, it retains the +1 enhancement bonus on attacks and damage possessed by the rod form.) The serpent returns to rod form (a full-round action) whenever the wielder desires, or whenever it moves farther than 100 feet from the owner. If the snake form is slain, it returns to rod form and cannot be activated again for three days. A python rod only functions if the possessor is good.
Prerequisites: Craft Rod, Craft Magic Arms and Armor, baleful polymorph, creator must be good.
Cost to Create: 6,500 gp, 520 XP, 13 days.