I'll keep the lack of traditional vampire weaknesses in mind.  :-)<br/><br/><br/>I think I've locked down Tann Rinn's magical abilities as consisting of 5 effacious alchemical procedures she has developed over the years.  They each occupy a hierarchy, and represent her progress in attempting to transmute lead into gold.  (the real goal being immortality, not false wealth)  Black dragons could probobly learn any of her transmutations reasonably easily, while other dragons might just need to learn them in order.  Dragons and Dark Ones could also use her transmutations as inspiration for their own sorcery or special abilities.<br/><br/><br/><strong>Tann Rinn Mitoga's Lead into Dust Transmutation</strong><br/><br/>This was Tann Rinn's first successful application of alchemy, even though it's such an impractical technique it doesn't really even appear to do anything in most cases.  The lead into dust transmutation requires the subject of the transmutation to be immersed in a boiling solution of aqua regia, quicksilver, and mud.  The solution rapidly tears away at the object's hierarchy in the chain of being; precious metals become ferrous metals, ferrous metals become base metals, base metals become rocks, rocks become sand, sand becomes dust.  The transmutation is harder to test on living beings, but it seems to tear away at their bodies and souls, causing them to lose memories and access to supernatural powers.  Plants get a more merciful fate, and merely become soil.<br/><br/>Dragons which consume the lead into dust reagants seem to have a much easier time performing internal alchemy, making performing the higher transmutations Tann Rinn developed considerably easier, allowing the dragon to consume massive amounts of mercury and acid without suffering the sort of harm such activity would normally cause.<br/><br/><br/><strong>Tann Rinn Mitoga's Lead into Lead Transmutation</strong><br/><br/>This transmutation is an unusual, and initially seemingly useless one.  It causes an identical object to switch places with another identical object, so long as the objects are perfectly identical and are moving at the same velocity.  Anything contained within the objects transferred is also transferred, enabling the transmutation to be used as a form of teleportation (most commonly with cars and restroom stalls).  Actually performing the transmutation requires golden etchings on both objects, as well as the application of high powered electromagnets levitating a specialy prepared solution of liquid metals over the etchings to activate the transfer.<br/><br/>The lead into lead transmutation can be performed considerably faster if the etchings are made with dragonfire supplemented with swallowed gold.  Theoretically, living beings could be transferred with the transmutation, but no known alchemist has released the results of such experiment.<br/><br/><br/><strong>Tann Rinn Mitoga's Lead into Iron Transmutation</strong><br/><br/>Also known as the "Wyvern's Seal" transmutation, this tranmutation transmutes an object (most commonly the blood of a living subject) so that it will be harmful to enemies of the alchemist.  Activating the transmutation requires injection of a solution of iron, silver, and a large concentration of a substance that has the same elemental resonance as the alchemist, as well as for a mark to be made on the subject.  The transmutation takes eight hours to take full effect, at which point it becomes permanent, barring certain sorcery or a careful application of the lead into dust transmutation.<br/><br/>The lead into iron transmutation seems to offend transcendantly powerful beings, and affected creatures tend to suffer when attracting the attention of such beings.  Or perhaps they simply find places of religious signifigance uncomfortable due to some strange complication of the transmutation itself.<br/><br/><br/><strong>Tann Rinn Mitoga's Lead into Bronze Transmutation</strong><br/><br/>The lead into bronze transmutation is a somewhat desperate transmutation, requiring an extremely intimate physical connection between the alchemist and the object of the transmutation.  The transmutation removes a peice of the soul of the alchemist, and places it within the affected object.  Affected objects take on qualities of the alchemist, gaining a strong elemental resonance to match that of the alchemist, and shifting in character to be more like the alchemist.  Objects so affected become powerful enchanted objects, while living beings often experience personality changes.  When transmuted by a dragon, affected beings often tend to gain a great deal of power as well.  The alchemist can suffer many ill side effects for forcefully removing a chunk of her soul, and few alchemists use this transmutation lightly.<br/><br/>Typically, the portion of the soul used in such a transmutation heals in about 6 months; however, such healing often results in permanent personality changes, and often takes longer.  Some suspect that abuse of this transmutation may have driven Tann Rinn insane.<br/><br/><br/><strong>Tann Rinn Mitoga's Lead into Silver Transmutation</strong><br/><br/>Using the lead into silver transmutation first requires that the subject of the transmutation be completely transmuted into dust with the lead into dust transmutation, translocated with inert matter using the lead into lead transmutation, marked with the lead into iron transmutation, then immersed in quicksilver, which then has a silver mold of the subject as it was before the transmutation placed around it.  Once these steps are complete, the inert matter reforms into the original subject, which is identical in every way except for being in a state of complete stasis with regard to time.  Iron so transmuted will not rust, transmuted food will not spoil, and transmuted living creatures do not age, sweat, sleep, or even breathe, yet are otherwise fully functional and retain all memories of their previous existance.<br/><br/>Beings transmuted by the lead into silver transmutation enjoy an imperfect immortality though; they cannot heal naturally at all, and simple wear and tear will generally destroy them in the same amount of time it takes for a normal example of such an object to go through its entire lifecycle.  Living beings transmuted this way are still subject to death by beheading or peircing of the heart.  Living beings transmuted by the lead into silver transformation do have souls, but their souls are static, and they are almost incapable of learning, completely unable to graps new concepts, and having to relate everything to their previous experience.<br/><br/><br/>The lead into gold transmutation, if it existed, would enable the user to be immortal, heal extremely quickly, acquire new magical powers at an incredible rate, and could even be used to revive the dead.  Tann Rinn, if asked if she has this power, simply notes that she would have used it on herself a long time ago if she did.