I don't know if it is an expected behavior but Bodyguard's Target effect before Bodyguard's User and vice versa. If a 2x Knight cast Bodyguard on a 3x Unit, the 3x unit will have it's Bodyguard's effect finished early. This makes the effect weaker as sometimes the target cannot be protected at all before enemies' ulti, especially for high action units. Also, Bodyguard can be cast on itself with no effect, which should be removed.