Energy Fountain

Energy fountains are, by far, the most common form of fountain in the dungeon. Stepping into one will use up some of its stored energy to restore your own. They start with 45 points of energy within them, plus five times the depth of the current level; once their energy has been expended, they fade away.

You can also drop certain objects into a fountain of energy to energize them; this is the same effect you get when mixing such an item with a Potion of Energy. As with all fountains, though, it will not have any effect on potions, while dropping a gem on it will destroy the gem and change the nature of the fountain itself.

Energy fountains themselves can be created by dropping a topaz into any other fountain.