Evolution

Evolution is a process of increasing card's grade. After reaching a certain level, card can be evolved by consuming certain amount of gold and evolution material cards. Once a card reaches its highest potential level (before evolution), it must be evolved in order to continue leveling. Evolved card will remain at the same level before it's evolution while increasing it's grade and stats, at the same allowing itself to level up even higher once it is evolved.

In short, the conclusive point are as followed:
 * After reaching highest level (with possible evolution), the card must be evolve in order to continue leveling.
 * Evolution consumes gold and material cards.
 * Card's level remain after evolution, while increasing in grade and stats.

With the exception of evolution materials (rings), skill faeries, marrones and special dungeons materials, evolution of other cards will yield you dragon gem(s) if it adds a new entry to your bestiary. In short, evolving a card for the very first time will give you dragon gem(s) which can be claimed from bestiary.

The following table shows card evolution, with necessary information: ^ For the current unit