I'm actually having a harder time finding the rare talismans like guard, thief, thorn shield, paralysis (is giving me nightmares), red penetrate. Guard for me seem to be the rarest, I have one set but they aren't matched, and I think I got them from a secret level. Thief drop anywhere on kingdom of the sands and I've found two by chance. I should start a location thread for rare talismans lol.