as there drakons, serphynx, and maskeraith that eats crimsonite, luminite, and dark matter sprite food. there also should be moonstone and valestone sprite food and based on 2 new types of battle sprites that will knights be feeding them. i thought it's better that way to make moonstone and valestone more valiable because its useless now. and also it's instead of just making reskins of the same types. i still don't know how will they look or what is their abilities but that what should the sk team and devs think about.
There have been numerous threads on this subject
https://www.google.com/search?q=spiral+knights+moonstone+valestone+sprit...