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Cave of Mysidia

Last updated: February 3, 2026

Collectibles Tracker
Bestiary
75 of 128
Chests
130 of 234
Locations
20 of 27
Keywords
12 of 15

Six floors. Hidden walls on almost every one. And a doppelganger of Firion blocking the only door forward. The Crystal Rod sits at the bottom of the Cave of Mysidia, and you can't reach the Mysidian Tower without it.

Journey to the Cave

Sail northwest from Tropical Island back toward the Mysidia continent. The cave is inside a circular range of mountains; look for the gap on the right side to get in. Overworld enemies between here and town are the same mix you've been fighting: Cockatrices, Black Flans, Red Mousses. Nothing new on the walk over.

Restock at Mysidia before entering. Hi-Potions, Ethers, Phoenix Downs, Gold Needles. Make sure you have the Black Mask from Tropical Island. Without it, you're stuck on floor 1.

Floors 1 and 2

1F. From the entrance, head slightly down and follow the path left toward the top-left corner. Just before reaching it, there's a path going down. Chest 1 is straight below. Go back the way you came and take the first path down. At the crossroads, go right and down a nearby staircase for chest 2. Come back up, then head left and keep going all the way left, all the way down, and down another set of stairs. A door is to the right.

Standing in front of that door is a doppelganger of Firion. You can't fight it, can't walk around it. Open your inventory and use the Black Mask. The copy dissolves. Go through the door.

2F. Go up the stairs and keep heading straight up, then take a right. Go down the first set of stairs for chest 3 (Power Staff). Back up, continue right and down. See the arrow-shaped mark on the wall? There's a gap. Walk through it and head up for chest 4 (Flame Lance). Good polearm upgrade if you're using spears. Come back through the gap, head directly left, take the first path down, then go left again. Stairs at the end lead to the next floor. The door to the right is just past them.

Floors 3 and 4

3F. Head down from the entrance, then go up the stairs to the left. Follow the path left until you hit a wall with a chest just behind it. There's a gap in the wall here; walk through it for chest 5 (Ice Bow). A solid ranged weapon for Maria or whoever you're keeping in the back row. Go back through the gap and head right, then down when possible. Go right again, follow the path to some stairs going down. Chest 6 (Ogre Killer) is right there.

Watch out. That's a monster-in-box with 5 Bombs. They self-destruct when they take damage, and each explosion hits hard. Try to kill them in one round with group magic before they blow up. If even two go off on the same character, that character is probably dead. Continue left from chest 6 and follow the path to the door at the end. Skip the door along the way.

4F. Head left and down (you can use the gap in the wall or go around via the stairs). Follow the pathway up to the top-right corner and take the stairs down. Chest 7 is right next to you. A little further down, you'll see three doors. Take the middle one. Chests 8 (Drain Tome), 9, and 10 are all inside. Come back out, then go to the bottom-right corner and through the door to the next area.

Floor 5

Chest 11 is to the right side of the starting area. Another monster-in-box, this time 5 Ghosts. Much easier than the Bombs; a couple hits each and they're done. Head down and follow the path right, then go up the stairs. Keep going up along the right path until you find a gap in the wall.

This hidden area is loaded. Chests 12, 13, 14, and 15 are at the top. Chest 16 is at the bottom. Five chests behind one gap in the wall. Leave through the gap, head up and follow the path around. Eventually you'll go all the way down to some stairs near the bottom-left corner. Take them, follow the path left and up, and go through the door.

Red Souls and Yellow Souls show up on the deeper floors. They absorb all elemental magic, Poison, Psychic, Spectral, and Instant Death. Physical attacks only. Red Souls have 540 HP; Yellow Souls have just 20 HP but higher evasion. Don't waste MP on them.

Floor 6 - The Crystal Rod

Chests 17, 18, and 19 are all in the final room. Chest 17 is the Crystal Rod. Pick it up. This key item opens the entrance to the Mysidian Tower. Grab the other two chests while you're here.

Cast Teleport to leave. Walking back through 6 floors of Malboros and Cockatrices isn't worth your time (or sanity). Head back to Mysidia and rest. But before you sail toward the tower, check the warnings below.

Collectibles Tracker
Bestiary
78 of 128
Chests
149 of 234
Locations
21 of 27
Keywords
12 of 15

Enemy Encounters

20

20 enemy types in Cave of Mysidia. Ghosts, Red Souls, Yellow Souls, and Bombs are new entries from monster chests. Gigantoad is a rare spawn on floor 5 near water. Malboros are the biggest threat throughout.

Treasure Chests

19

19 chests across 6 floors. None are permanently missable. Many are hidden behind fake walls. The Crystal Rod on floor 6 is required for story progression.

Chest
1F, path to the left near top-left corner
Chest
1F, down stairs from crossroads area
Power Staff
2F, up stairs then straight ahead
Flame Lance
2F, through gap in wall, up
Ice Bow
3F, through gap in wall
Ogre Killer
3F, down stairs on left side (monster-in-box)
Chest
4F, right next to stairs
Drain Tome
4F, middle door of three (3-chest room)
Chest
4F, 3-chest room
Chest
4F, 3-chest room
Chest
5F, right side (monster-in-box)
Chest
5F, hidden area behind gap in wall (top)
Chest
5F, hidden area behind gap in wall (top)
Chest
5F, hidden area behind gap in wall (top)
Chest
5F, hidden area behind gap in wall (top)
Chest
5F, hidden area behind gap in wall (bottom)
Crystal Rod
6F, deepest chamber
Chest
6F, final room
Chest
6F, final room
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