Board Thread:General Discussion/@comment-31837463-20170427025541/@comment-28829111-20170427220141

go to your game and look at collections. in the search field enter the type of summoner you would like:

Sphere, Time Violator, Stone Heart, or cracked mirror

This will give you the collection sets that gift those items.

Here is a link to the Wiki page that shows where various collection sets are:

http://seekers-notes.wikia.com/wiki/List_of_Collection_Item_Locations