... and last, certainly not least, there's the Wyrm Of War thingy
in Dragons Of Eberron. Sorc gets Tiger Claw
(?) on a 1 for 1 trade basis.
It's ~psi so long as the usual dual caster stuff in on the table.
So now you gotta go bone up on the whole White Dragonspawn Loredrake Dragonwro'ng ...
And the not-so-small problem of what's your I.L. ?!