Necklace Of Dragon's Teeth

A necklace of dragon's teeth summons a troop of loyal draconic warriors to your aid. Legends say that in the early days of the world, nearly all human life was wiped out in a great catastrophe. Sphenos, the Great Wyrm of the Earth, took pity on the few survivors and gave a bag filled with his own teeth to the farmer Imguren, telling him to sow them behind him in the earth as he walked. From the scattered teeth arose new people, the children of earth. (Knowledge (religion) DC 15) Imguren saved some of the teeth against future need. Generations later, when his descendants were being threatened by barbarians, they found the sack and planted the remaining teeth. These teeth then sprang up into fierce warriors who drove back the invading horde. These strings are made in remembrance of that miracle. (Knowledge (religion) DC 20) A necklace of dragon's teeth is a simple leather cord strung with pierced fangs, each about 2 inches long. Sometimes the ends are loosely tied so that it can be worn around the neck. (It does not count as an item worn around the neck for the purpose of determining which of a character's magic items are effective.) A strand initially has twelve fangs, though it can be discovered with fewer fangs than this (reduce the price proportionately). As a standard action, you remove a fang from the string and throw it onto the ground.
A thrown fang grows into a draconic myrmidon that acts on your turn on the following round. The myrmidon remains for 10 rounds or until it is slain, and either defends you loyally or attacks a target of your choice. The myrmidon understands your spoken commands regardless of the language you speak.
Moderate conjuration; CL 10th. Craft Wondrous Item, summon monster IV, 12,000 gp, 960 XP, 24 days. Weight: -; Price: 24,000 gp.
Source: Races of the Dragon