Talk:Anomalies/@comment-36165018-20190115144802/@comment-172.77.35.0-20190115204951

They are also available still in "Monster Treasuries". This is when you defeat a monster and you get the door to enter rather than the chest to open... where you have the chance to open up to 3 chests if you buy keys. You can increase the chances of getting anomaly summoners/dispellers by using a boost that increases drops from monsters. Whether or not you buy keys is up to you, but I wouldn't. If you defeat a lot of monsters you are bound to get a few. I usually save up weapons and I do not use them unless there is a quest, this includes event weapons. Near the end of the event when I have amassed a large inventory of weapons for event monsters, I use a boost and spend several hours, or an entire day, doing nothing but fighting monsters. If I'm lucky I'll get a few summoners to use in the next event.