I have an upgraded fire nymph and it seems to have hard time obeying me. First of all, if I am on my way to casting its berserk skill (+6; -6) and cancel it, it still consumes the quanta and does not allow me to try casting the skill again. However, this is the minor of the two problems. In pvp the skill is even more glitchy. When I try to kill an opponent's creature with the berserk skill, it does not work. For example, in the last duel I cast (+6;-6) in 4 consecutive turns on the same pest (0;4) without it dying. Please help.