- An archetype of Beast monsters made by --OnePiece (talk) 22:12, October 18, 2017 (UTC). They are all Crystalized-skin Beasts powered by "Crystterious Yggdrasil" and they will support mostly Beast Monsters and the " Forest" field spell cards
The members are based on mytholgic creatures for a sort of cultures from countries. All of them will have a crystal light skin
- While some of them will help Animal Monsters in general, they will most focus on support other beast monsters. Since they get a bonus effect of the field spell card "Forest", having some Field Support cards will also be useful. Cards like "Terraforming" or " Magic Reflector" will support "Forest". While prohibited in TCG/OCG," Rescue Cat" can also work greatly on this deck by searching and triggering the effects of "Crystterious Ratatosk (the second one)
Crystterious is a pun with the words critter, crystal and mysterious.