Just read someone posting this: apparently, you can use the "guard" skill to target an area on the battlements of a tower, which transforms your pet into a mighty vertical climber. Attack, my gravity-ignoring furry friend! Take down that fancy unreachable superior siege weapon! https://forum-en.guildwars2.com/forum/professions/ranger/Guard-in-WvW If it's actually intended, this can of course be pretty darn useful for the raid. For now, I'll be holding off on using this skill in this manner.