Feymarch

The Feymarch, also known as the Land of Monsters or the Land of Summons, is a location from the game Final Fantasy IV. It is located in the Underworld, and it is here where all Eidolons live. The Eidolons are guided by their queen Asura and king Leviathan. Due to the immense magical power located on the Summons' plane, time flows faster in the Feymarch. The town in which the Eidolons live is guarded by the Passage of the Eidolons, a cave filled with lava, and only those with the Float spell can bypass the lava and reach the Feymarch; crossing it without Float will cause HP damage. Rydia was brought to the Feymarch when Leviathan attacks a ship she is traveling on, and matures very quickly under the watch of the king Leviathan, after which she is sent out to help defeat Golbez.

After obtaining the Falcon, Cecil and his friends can travel to the Feymarch. They can fight Asura and Leviathan. After the fights, they will become available for Rydia to Summon.

In the cave

 * Hi-Potion X3
 * X-Potion
 * Ether1
 * Phoenix Down
 * Cabin
 * Poison Axe
 * Ninja Katana
 * Monster-in-a-box: Fight Warrior X5 for a Defense Sword

In town

 * 10000 accumulated gil
 * Ether
 * Turbo Ether
 * Elixir
 * Phoenix Down
 * Remedy
 * Samurai Bow
 * Samurai Arrows X10
 * Rat Tail

In the cave

 * Summoner
 * Bloody Eye X2
 * Bloody Eye X3
 * Belphegor
 * Belphegor X2
 * Arachne
 * Arachne X2
 * Thunder Dragon
 * Warrior X2, Mini Satana X2
 * Warrior X2, Mini Satana X4
 * Warrior X5 (Monster-in-a-box)

In town

 * Asura (boss)
 * Leviathan (boss)