I'm stuck! – Kings Hero - Turn Based Strategy Review

I currently am stuck on the task to find 400 mana. I've looked all through every level but can't find any more mana and I'm not able to advance until I find it. Help! Update: I had to go back to one of my old saves and replay the Elven Woods level without buying anything until I had 400 mana. Good thing I saved in multiple slots! That said, the game is unfinished. The game ends even though the pits you encounter throughout the game are never used.
Review by RPGS fan on Kings Hero - Turn Based Strategy.