Board Thread:General Discussion/@comment-35525658-20180512144455/@comment-34343471-20180512184958

During a guardian event, you can earn a reagent such as envelopes or cookies which can be used to level up the guardian. If you look halfway down this page, you will find the "Winter Turmoil Desk Guardian Challenge" for Sparky the reindeer.

http://seekers-notes.wikia.com/wiki/2017_Christmas_Update