Well, these skills just need to be understood or actively used by him for a long enough period of time to reveal their full description. Regardless, this is a spoiler chapter, and such things don't concern us here.
Here is the full description:
Drakókardi (Greek for Dragonheart):
Devours and absorbs dragon's hearts and their unique powers and abilities.
Adds the bodily characteristics of devoured dragons to one's own form.
Added Bodily Characteristics & Powers:
- Ancient Dragon Traits:
-- Gravelstone Scales. (AN: Scientifically, gravel is made of individual mineral grains of different kinds. Arranging certain ones into a desired crystalline formation is probable)
-- Light Grey skin.
-- Sixth Finger: Opposite opposable thumb.
-- Secondary Set of Wings.
-- Fire Breath.
-- Red Lightning: Authority to summon and control Ancient Dragons' Red Lightning as magic.
-- Gravel Storm Form: Allows one to disintegrate into flowing gravel dust, materializing whenever and wherever one wants.
-- Incantation Conductivity: While in dragon form, channeling incantations becomes possible without a sacred seal.
- Infant Dragon Traits:
-- Scaleless.
-- Yellow Skin.
-- True Quadruped: Transforms the arms and the legs to the perfect form for running on land.
- Wyvern Traits:
-- Pink Scales.
-- Pinkish-Grey Skin.
-- Forelimb Wings: Transforms the arms into the perfect shape for wings. (AN: That does include the shifting of the points of attachment and joints for both muscles and bones and whatnot. I wont go into detail about that here)
Drakónteia Thysía (Greek for Draconic Sacrifice):
Upon confirmation of driven, undivided will, life essence is consumed to either take or give life.