Magnetic Cavern B4F

Area Magnetic Cavern
Other Maps B1F, B2F, B3F
Amenities Save Point
Exit/Warp Exit and Warp function properly on this map
Take the eastern bridge to find the save point, and use it because it's time for a boss fight. You can collect the Exit after the fight, since it's so out of the way. You may as well use it, since you will have at least one person, and two if Cecil is high enough level, who can cast Exit in your party for the rest of the game.

As for the fight with Dark Elf, you cannot win round 1, so don't waste any Items trying. You'll be healed up for round 2, and the magnetic field will be removed (assuming you brought the Twin Harp, at least), so re-arrange your party and gear to optimal forms.

The fight against Dark Elf is not terribly difficult. He will cast Wind and cause status ailments, but Tellah should be able to handle that while the rest of the party attacks. The Dark D. that he eventually turns into, on the other hand, is nasty. You can win easily by having Tellah cast Wind, but in a straight-up fight, its Dark Breath ability deals a lot of damage to the whole party and makes things difficult. As usual, Bersk is very powerful for this entire fight.
Compare Magnetic Cavern B4F to other Maps
Maps: Connected to Magnetic Cavern B4F – 1 shown
The name of the map, including both the general area and the specific floor or section; temporary maps only appear during certain brief plot points; underworld and moon maps are found on those worlds; end game maps are available during the closing events of the game
Name
The number of treasures to be found on this map
Treasures
The cost to stay at the inn, if there is one present
Inn
Does the Exit spell function on this map?
Exit
Does the Warp spell function on this map?
Warp
Miscellaneous helpful features of the area, such as Namingway and fat chocobos
Amenities
A list of the types of shops that can be found here
Shops
Magnetic Cavern B3F 4 - Yes Yes Save Point -
Plot Battles: Found in Magnetic Cavern B4F – 1 shown
Monsters
The specifics of where this plot battle will be fought
Notes
Dark Elf, Dark D. Inside crystal room, start against Dark Elf which changes to Dark D.
Treasures: Found in Magnetic Cavern B4F – 2 shown
Treasure
The specifics of where this treasure can be found
Notes
The monsters guarding this treasure, which will attack when the treasure is opened
Guarded By
Earth Crystal Found in crystal room after fight -
Exit Chest west of north room -
Monsters: Found in Magnetic Cavern B4F – 9 shown
Minibosses appear as treasure guardians or are otherwise especially powerful monsters; bosses are unique monsters that are defeated as part of the plot; lunar guardians are powerful monsters guarding forbidden weapons; the final boss must be defeated to complete the game; special monsters are not fought in standard battles
Name
The monster's starting and maximum hit point total
HP
The amount of gil earned for defeating this monster
Gil
The total amount of experience earned for defeating this monster (this is split evenly among surviving party members)
Exp
Attack determines the base per-hit damage of the monster's physical attack
Att
Magic determines how powerful the monster's spells and special abilities are
Magic
Defense reduces the amount of damage taken per physical hit
Def
Magic defense reduces the amount of damage taken by spells and special attacks
Mag. Def.
Some weapons are especially effective against certain monster families
Family
The monster takes extra damage from spells or attacks of any of the listed elements
Weakness
Monsters that resist an element take reduced damage from spells or attacks of that element, while monsters that absorb an element are healed by spells instead of taking damage (elemental weapon attacks are resisted instead of absorbed); individual monster pages indicate which elements are resisted and which are absorbed
Resists/Absorbs
The monster is vulnerable to status ailments listed in white, and immune to those listed in red; the status ailments are Poison, Darkness, Silence, Pig, Mini, Toad, Petrify, KO, Berserk, Confuse, Sleep, Paralyze, Curse, and Gradual Petrification
Status Vulnerability
Cave Bat 334 151 gil 598 42 - 3 12 - Holy, Projectile Lightning PoDaSiPiMiToPeKOBeCoSlPaCuGP
CaveNaga 285 201 gil 740 40 5 3 12 Reptile Holy - PoDaSiPiMiToPeKOBeCoSlPaCuGP
Mage 300 232 gil 1,000 44 - 3 22 - - - PoDaSiPiMiToPeKOBeCoSlPaCuGP
Ogre 865 240 gil 800 60 - 2 12 Giant Holy - PoDaSiPiMiToPeKOBeCoSlPaCuGP
Panther 342 252 gil 820 50 - 2 16 - Holy - PoDaSiPiMiToPeKOBeCoSlPaCuGP
Python 108 222 gil 720 46 - 0 22 - Holy, Ice - PoDaSiPiMiToPeKOBeCoSlPaCuGP
VampGirl 270 195 gil 810 38 21 2 15 Undead Fire, Holy Lightning PoDaSiPiMiToPeKOBeCoSlPaCuGP
Dark D. 3,927 5,000 gil 6,000 80 15 1 254 Dragon Holy Holy PoDaSiPiMiToPeKOBeCoSlPaCuGP
Dark Elf 23,890 4,000 gil 1,000 18 1 0 254 - Holy - PoDaSiPiMiToPeKOBeCoSlPaCuGP
Items: Found in Magnetic Cavern B4F – 2 shown
Rare items can only be found as treasure, won or stolen from monsters, or purchased from a single shop; unique items can only be found as treasure or as very rare monster drops; key items are unique items that are important to the plot; exceptional items are found only as very rare monster drops
Name
The cost to buy this item in a shop
Price
The amount of gil received when selling this item in a shop
Value
The spell cast when this item is used in battle; using the item in this way consumes it
Spell
The target of this item's effects when used in battle
Target
Earth Crystal - - - -
Exit - 90 gil Exit -
Magnetic Cavern B3F Tower of Zot 1F