Each Dragon will have a number of skill slots, according to its rarity, the detail can check in here.
Skills will have a percentage of casting ratio, meaning in each turn, the Dragon which equip that skill can be cast with a consistent percent in skill's description. The skills will have 3 levels of rarity, included: Common (with White color), Rare (with Yellow color), Legendary (with Red color). There are several kinds of skills, they may be General - for all Dragon classes and Elements can use, and for each Class, Element can be used.
The Skill Config Popup- Where User can configure their Dragon's Skill in the most comfortable way
With this update of the game version, we released the number skills with the detail below: