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Those that pass the tests to gain entry to the Dragon Mountain Temple are offered, by the gods, admission to the Order of the Dragon Knights. If they accept they continue on to their initiation into the order. The members of the order receive the following benefits.
The dragon ages as the knight advances in level instead of length of their life. The dragon's age category equals four plus the knight's level. When this number passes the hit dice of a dragons age category it magically grows into that age category. However, the bond that exists in this way also extends the life of the knight and shortens the life of the dragon. If the knight were to perish so would the dragon, and vice verse.