(player 1 unlocked the sanctuary and rolled the dragonstomper -> this will determine that the castle chest will not be the dragonstomper -> player 2 joins the world, has unlocked the sandgoose and the swinging blade in his/her own universe, AND HAS NOT determined a third roll before-> chickenbane will roll being the only available option.) However, if both relic slots in this universe are still open, you risk that both relic spots will have the same loot.
Example: When having looted and determined 2 relic weapons in your own universe, if the player visits a universe where at least 1 relic roll has not been determined yet, then the third roll will trigger and will roll a weapon that has not been rolled on yet.