Mysterious Jungle (PMU 7)

Mysterious Jungle, well known as MJ, is a Grass and Bug themed dungeon first introduced in PMU 6 and was reintroduced in PMU 7. It can be found in Archford, southwest of Greenport Town. The boss of the dungeon is the Mythical Pokémon Mew. The weather occurrences here include rain, cloudy and fog.

Due to the amount of resources provided, ease of defeating enemy Pokémon and experience points gained, Mysterious Jungle is one of the best late-game dungeons to train Pokémon from as low as level 50 up to level 100.

Attributes
Mysterious Jungle initially has no darkness, however darkness begins on Floor 11 and increases on Floor 31 and Floor 41. On Floor 45 is a sealed chamber with a Shiny Box that can contain a Grass Silk.

After Floor 20, there is a maze with a hidden pathway. There are a few visible spots through it. In the maze there are 12 hidden Mushrooms, 1 hidden Big Mushroom, and 2 hidden piles of 300 Poké. There are false pathways with Explosion or Chestnut Traps.

There is another puzzle after Floor 30. There are multiple bushes in every section; one of them is a switch that makes the shrub blocking the exit disappear for a limited time. Alternatively there is a shortcut on the left with shrubs removable via using the move Cut.

Instead of another puzzle, after Floor 40, there is a camp run by a Nuzleaf named Ka'giso. There's a Kangaskhan Rock, as well as a healing bed.

Boss
Mew can be found at the end of this dungeon at Level 90. It claims to have been watching you and thinks you are a fun Pokémon to play with, and forcefully engages in a fight with you. Mew can drop 1 of 3 items, but it may also drop nothing as it can hold a Pokédoll which will absorb an attack and end up being consumed.

Boss drop:
 * Wonder Chest
 * 2 Big Mushroom
 * Mew's Heart Slate

Before Fighting: After Defeating:
 * Mew: Hello!
 * Mew: I've watching you.... teehee!
 * Mew: You seem like a fun Pokémon to play with!
 * Mew: I don't have to ask, because I'm Mew!
 * Mew: Lets go! Teehee!
 * Mew: Owwwwwie!
 * Mew: That hurt! I wanted to play not fight!
 * Mew: What!? You're telling me I played too rough with you?
 * Mew: That's just nonsense!
 * Mew: You're such a big meanie!
 * Mew: Whaaaaaaaaahhh!!

Mysterious Jungle Relic
Box items:
 * Big Nugget
 * Golden Apple
 * Grass Dust
 * Link Cable
 * Moss Rock
 * TM Infestation
 * TM Psychic
 * TM Sludge Bomb
 * TM Solar Beam
 * TM Venoshock

Secret Room
Mysterious Jungle's Secret Room can be found starting from Floor 41. There are 5 switches in total: 4 switches resembling a flower and 1 inside the chamber with boxes. The one that correctly opens the path is the top left button.

Box items:
 * Moss Rock
 * Gold Banana Bunch
 * Relic Band
 * Relic Gold
 * Relic Statue
 * Relic Vase
 * TM Infestation
 * TM Psychic

Pokémon
''Pokémon in bold are recruitable. Please visit the Recruitable Pokémon page for more information.''

Kecleon Shop Items
There is a Kecleon Shop on Floors 12, 28, 40, and 54.

Mystery Eggs
Mysterious Jungle has Mystery Eggs that can appear on all floors.

Dungeon Objective
Mysterious Jungle is one of the most popular dungeons for training, specifically for training Fire & Ice types. Valuable items spawn frequently and the boss, Mew, may rarely drop an exp boosting item—a Wonder Chest—or its Heart Slate. The Grass-type starters from Kanto, Johto and Hoenn can be obtained here. Mysterious Jungle is the dungeon where the sealed chamber for Grass Silk resides as well. Mysterious Jungle is also well known for the amount of supplies, making it a good dungeon for restocking.

Tips

 * It is recommended that to bring a Pokémon with Safeguard, Refresh, Heal Bell, or Aromatherapy to deal with common status conditions like poison. However Safeguard will not help against Jumpluff since it has the Ability Infiltrator.
 * Gems with the applicable weather condition are a good alternative at preventing status conditions as Infiltrator cannot bypass them.
 * AoE moves such as Heat Wave & Blizzard are very powerful here.

Trivia

 * Mysterious Jungle was created by Kirk.
 * All Pokémon that could be found in the original PMU 6 version can also be found in the PMU 7 version. The PMU 7 version also introduces some new Pokémon.
 * Mew used to have a chance to drop a Miracle Chest instead of a Wonder Chest.
 * Two Pokédolls and Dawn Stones appeared in the end room, but they were removed.
 * Before, the rest stop after Floor 40 looked different, did not have a healing bed, and had an Escape Orb.