Holy ****snacks! This thread moved faster then I thought.
Zyados, this one is for you!
Knight of the Dragon
Varies ACF; replaces the mount class feature or animal companion
Requisite: must be a chosen of Bahamut, but not have undergone the rite of rebirth
Restrictions: May not be a druid
Alignment: Lawful Good or Chaotic Good
Draconic Compatriot:at the level where the character would normally gain the mount or animal companion the character gains metallic dragon instead. the dragon will have the exact same amount of hitdice as the character and its alignment matches that of the character.