Three new elements have been added: Water, Dark, and Legendary.
Looks like you'll have to expand to the mine and then mine for parts.
Water element creatures need to be unlocked by expanding to the frostfang area
Dark element creatures need to be bred... Hmm... What do you need to breed these beauties?
Legendary element... There is only the crystal unicorn which is basicly a diamond dragon (for all my fellow ds'rs out there )
Good luck all! ^^ and happy hunting...