Multiple threads were made about this. Please refer to the image Midoku posted from the Mongo guide:
http://tera.enmasse.com/news/posts/mongos-raid-potion-shack-catalysts-missing

And if you have feedback about the event please post it in the main feedback thread so we can keep things nicely organized. Thanks guys!
https://forums.enmasse.com/tera/discussion/11751/tera-mongo-catalyst-feedback