Potions disease !!!

The game does not seems to be very bad .. am jetz felt after 1000 hours of play still no dragons encountered. Then there is the beginning of a major mission to kill a demon. The beginning of the mission has all my potions consumed as well as the energy of all the helpers. There is no way somewhere to refill the watering or my energy? A blow of the demon and I'm at the end? What kind of a game logic with the potions? Now I can do all the mission (duration 1 hour) again and will have to pay attention to my potions? For such a game principle no longer there as a star! It is frustrating and at the beginning after the 2nd or 3rd main mission. Weak, weak, weak!