i have another question, maybe a stupid one, but i couldn't find a clear answer.
Imagine the following situation. My Quest-Zone is burned down, but i still have a unit questing there. This unit there cannot be destroyed in combat, because if the opponent attacks my QZ, i just won't let the unit defend the zone, which doesn't matters because the QZ is burning already. Is it true, that this unit can only be destroyed by a card effect and otherwise my opponent can't prevent me from completing the quests?