Things You'll Need
Instructions
Play through the game until the party defeats Ayla and his robotic dinosaur and then travels through the portal at the Reptite lair, which will take them to the year 12,000 B.C.
Travel through the teleportation devices and land bridges in 12,000 B.C. until the party reaches the city called Kajar.
Locate the three elemental books scattered throughout Kajar that can be opened if the party examines them. Open the water book, followed by the wind book, and finally the fire book. If the books are opened in the proper order, a doorway will appear nearby that leads to a secret chamber.
Enter the secret chamber and take the item inside called the "Black Rock."
Continue through the game until the party gains Magus as a playable character.
Fight in random battles to gain tech points until Magus learns the tech called "Dark Matter," Lucca learns the tech called "Flare," and Marle learns the tech called "Life 2."
Equip the Black Rock in the "accessory" slot for Magus, Marle, or Lucca. When you enter combat with all three of those characters together the triple tech "Dark Eternal" will now be available to use.