Can someone please explain to me why Priests have SS? Priests already have the highest defense in the game, can reflect ALL curse spells, and they have an attack that bypasses all resistances and does huge amounts of damage. Their only real draw back is they're the slowest class in the game, though after dual 2 they get a speed increases skill making them about the same as everyone else. Priests can just sit there and SS themselves and make it impossible for 3 of 5 classes to kill them, and make it even harder for the two remaining classes. Then they can res while virtually invulnerable. Maybe if there's only 1 or 2 priests you can get lucky and kill them both before they can res each other, but when there's more than that it is impossible to kill them before they res each other.
GM either needs to give all classes some kind of piercing skill or remove SS from the game. Priest already has the best defense in the game and is arguably the best class in the game because of it, there's no reason they should be able to be immune to three of the five classes.