Pokémon Mystery Dungeon: Blue Rescue Team and Red Rescue Team/Mt. Blaze

After completing the Lapis Cave dungeon, you will arrive at a save point where you can access your inventory. When you have finished, you have the choice of taking the Rocky Path or proceeding straight to Mt. Blaze. Rocky Path brings you back to where you started.

Items
This is the least amount of items you'll need for Mt. Blaze: Reviver Seedx3 Max Elixirx3 Oran Berryx3 Apple/Big Applex3 Heal Seedx3(optional)

Enemies
Rocky Path is an optional section of this dungeon for strengthening a weak rescue team in preparation for the upcoming battle with Moltres. None of the Pokémon here will join your team.

Mt. Blaze is a 12 floor dungeon containing Slugma, Torkoal, Rapidash and Magby.

After the twelfth floor, you come to another save point, from which you continue to Mt. Blaze Peak, with 3 floors containing Fearow and Arcanine.

Boss battle: Moltres
On the third floor, you encounter Moltres for the first time. After defeating him, he will allow you to pass. Water-type is best against him. Level 20 and up is a good Level to be in while being in the 3 boss battles.

Moltres is the easiest to recruit.But it's best to bring a friend bow just in case.