I've been thinking hard on a Fakemon recently, and have thought of it's 2nd evolution, it's typing and even a Pokedex entry.

Baby form- Phantome. Type: Ghost/Psychic.
Species: the Spellbook Pokemon
2 Dex entries:
1- "This pokemon is said to have been created through a magic ritual thousands of years ago, It's keystones on it's cover keep it's pages sealed and away from unworthy eyes.
2- The keystones on the cover keep it's pages sealed. When it finds a trainer worthy, it is said to unveil its secrets and is said to grant its trainer magic powers.

2nd evo- Revenomicon
Type: Ghost/Psychic