Things You'll Need
Instructions
Proceed through the game until the time traveling Epoch is modified to have wings and the party has gained Magus as a playable character.
Use the Epoch to go to the year 600 A.D. and land on the island to the northwest of Medina village that has a single cave on it.
Enter the cave and fight the various monsters inside until the party finds a treasure chest that contains an item called the "Blue Rock."
Rearrange the party so that it consists of Magus, Lucca, and Robo.
Fight enemies that give high amounts of tech points, such as the monsters on Death Peak in the year 2,300 A.D. or the creatures roaming around the Black Omen.
Keep fighting battles until the group earns enough tech points so that Magus gains the tech named "Dark Bomb," Lucca gains the tech named "Flare," and Robo gains the tech named "Laser Spin."
Have Magus, Lucca, or Robo equip the Blue Rock in their accessory slot. The triple tech "Omega Flare" will then be listed as an option during combat.