Dragon's Tooth

Dragon's Tooth were created in the aftermath of the Battle of Oblivion's Gate by all the Elemental Dragons. Before they returned to Tengoku, each of them created a tooth that contained a tiny fragment of the Dragon's power. In this way, the Dragons could have some small influence upon the Mortal Realm without violating their roles in the Celestial Order.

Appearance and Abilities
All nemuranai took the form of a fang from a large animal, and each of them contained a tiny kernel of the awareness, personality, and power of the Dragon that created it, and could be revealed by a shugenja communing with the kami of the Tooth. Only one of each Tooth existed at any given time.
 * Air: gave information, assistance in dealing with people
 * Earth: granted stamina, physical prowess, help against the Shadowlands or Lying Darkness
 * Fire: enhanced combat, or gave factual information
 * Water: gave healing, movement, travel
 * Void: usually granted wisdom and enlightenment