How do you beat the gnarled forest?

Well, i suggest Mewtwo, he lvls up really fast, and if u just happen to get the TM calm mind, you can can beat the dungeon by using that and barrier alot. always use confusion on your enemies, or...

Well if it's Gohma it's easy, you just need to shoot her eye and kill her with your sword. If it's Phantom Ganon, you need to shoot him some arrow and when he get off his horse, he will shoot some...

Collect all the monkeys

Go to Nimbus Station and if you go to the center of the plaza and check the map, it should be to the direct east or west of you.

first you need to find all the ghosts that all in different locations, after you are done with that you go to the middle of the temple where you began, then get the bosses key and fight the night