Natural Armor: At 13th level, and every 3 levels thereafter, the dragon disciple's natural armor bonus increases by +1 (to +5 at 13th, +6 at 16th, and so on).
Breath Weapon: At 13th level, and every 4 levels thereafter, the damage dealt by the epic dragon disciple's breath weapon increases by 2d8.
Bonus Feats: The epic dragon disciple gains a bonus feat (selected from the list of epic dragon disciple feats) every 4 levels after 10th.
Epic Dragon Disciple Bonus Feat List: Armor Skin, Damage Reduction, Epic Prowess, Epic Skill Focus (Knowledge [arcana]), Epic Toughness, Extended Life Span, Flyby Attack!, Great Charisma, Great Constitution, Great Strength, Hover!, Improved Combat Casting, Improved Darkvision, Improved Spell Capacity, Improved Spell Resistance, Snatch!, Spell Knowledge, Wingover!.
!Non-epic feat. Treat the dragon disciple's age category as one-half his class level for the purpose of the Hover feat.