At the Almanax Temple there is a duty free machine akin to a token machine that sits at most dungeons. At the top of the list of the items offered by this machine is a beer mug called the Heraldicana. Much like the Scripture of Almanax, it's an infinite use teleporting potion to a tester zone with the same name as the item. In the southeast corner of this island are two portals that lead to each respective boss. The other boss has HC available for testing, while I'll be pursuing in-depth tomorrow.