The Devs did it right this time. An Amazing set of items! The reward is 2 tiles in a specially marked bag. The tiles can be locked down in "Owner" houses. Tested a set with one in one of my houses and other locked down in a friend's owned home changed the access and poof we were bouncing back and forth. They do cross Facets. Didnt try in Fel so I dont know if it gives warnings (remembering the past and people luring others to their doom). Very, impressed with these tiles and the possibilities it gives. A guild member said it is a great tool for his crafter to safely enter his Fel home (just an example).