Sol Blade

The Sol Blade is a Long Sword found in Golden Sun: The Lost Age. It is found in a chest in Mars Lighthouse, just prior to the game's end. Unlike other Long Swords, it can be used only by Isaac and Felix; the other two characters who can use Long Swords, Garet and Piers, are incapable of wielding it. The Sol Blade is the second strongest weapon in the series, beaten only by the cursed Darksword in terms of initial power. It increases the holder's attack by 200. It is sold for 23400 coins and can later be repurchased for 31200 coins, making it the most expensive weapon in the game. (It is not, however, the most expensive item in the game; that honor belongs to the Mysterious Robe at 36500 coins.)

The Sol Blade can unleash a powerful, devastating effect called Megiddo (Hebrew for Armageddon). Possibly the most visually elaborate of all unleashes, the user leaps high into the air, the sword glowing bright red over their head. They then touch the blade of the sword into a star (possibly the Sun itself) and sling the celestial body on their target, where it explodes with tremendous force. Megiddo almost always kills a regular enemy, regardless of its elemental resistances and the fact that it converts damage to Venus damage, and unlike most other weapons, it does not add bonus attack rating; rather, it multiplies damage done by 3.

Although the Darksword is physically stronger, and it can be used by Garet and Piers as well, the Sol Blade is generally considered better, primarily because Megiddo is far stronger than the Darksword's unleash, Acheron's Grief. The curse that the Darksword possesses and the need to have Sunshine forge it from a piece of Dark Matter are other disadvantages of the weapon. The Sol Blade proves extremely helpful in boss fights, namely the one against the Star Magician, as a successful Megiddo can almost guarantee the death of one of the creature's minions. The final form of the Doom Dragon and Dullahan are also very vulnerable to the unleash.