Demon Axe

The Demon Axe is an  Axe-class Artifact weapon found in Golden Sun. The Demon Axe is cursed, meaning that if the wielder isn't also wielding the Cleric's Ring, there is a chance that he might not be able to act in a given turn, and must go to a sanctum and pay a healer to unequip it.

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It is located on the sixth floor of Crossbone Isle, and so cannot be gained until the party gains the Cloak Ball and can bypass the fourth floor. As an Axe, it can be equipped by Isaac and Garet. If the player transfers the Demon Axe to Golden Sun: The Lost Age, Felix and Piers can equip it as well. Its Unleashed power is Poison Cloud, which adds another 55 damage points, converts the damage from physical to Venus, and attempts to inflict poison on the target. It has the standard base unleashing rate of 35%. Poison Cloud appears as the axe strike creating a cloud of green-gold liquid.

For the time you can first get it, the Demon Axe is very powerful. Unfortunately, until the Cleric's Ring is gained, there will be the risk of losing turns to the curse's influence. By the time the Ring can be equipped, the player should also have the potentially more useful Wicked Mace (venom rather than poison, and can be equipped by Mia) and Muramasa (not as strong, but can haunt the target and is Mars-aligned, expanding the chance for Garet to use it optimally). In addition, by that time, the Gaia Blade is not far off. Still, if the cursed equipment user is meant to use attack-adjusting Psynergy such as Planet Diver, the Demon Axe is worth considering to maximize that ability (if the Gaia Blade is relegated to someone else, that is). Like most other Golden Sun weapons, the Demon Axe will be overshadowed by much of what's available in The Lost Age.