To beat Mystifying Forest you need to beat Wigglytuff and the other guild members at the end of the forest.
mystifying forest
Defeat all the guild Pokemon in something like mystifying forest
I belive there are aroud 12 floors
oran forest is between 3 and 7 floors. and midnight forest has 25.
In mystifying forest
You can't.Eevee was only available in Red and Blue, and will also be a starter in Explorers of the Sky.In Time/Darkness you can find them in Mystifying Forest (1F-13F) but they are rare.
Yes, you can find Celebi in mystifying forest if you have the secret slab and go to the 10th floor.
you can find him when your doin mystery forest though it might take some time i think
you first have to get to midnight forest after beating darkrai. Bring lots of food. Rotom should appear around B15. :P
you go to a certain forest mystical forist i think and there you find grovyle recruit and evolve him also you find mew at the end of the dungeon
google it. cuz it will be there 2nd answer: mission from treeko or magnemite.
beat the game