The five pylon bosses in Stormriven have somehow gotten into a state where multiple ones can be summoned at once. I don't know how it happens, but I came up to the spot, and someone just left a bunch of them sitting there. I engaged them, and got Yogash, Thunderfin, Procyon and Selwyn Skywatcher all at the same time. At least Yogash's cheat was active (He was in first position, but I fled before seeing if anyone else was cheating.)
