I found the cave of Ordeals to be the hardest thing I have faced in any Zelda game. I would always die when I faced the room with 3 Darknuts. You have to be really good to beat it with any fairies and bombs left. I finally beat it with like half of my last deal of health left, and like 20 bombs left. Arrows, the gale boomerang, and the clawshots help a lot. It kinda sucks that the end reward isn't that big, but it is fun to go through and see how quick you can do it without using that much health or disposable items.