Doom Axe

The Doom Axe, also known as Demon Axe is a recurring weapon in the Mana series.

Final Fantasy Adventure / Adventures of Mana
The Demon Axe (Zeus Axe in Final Fantasy Adventure) can be found in the Undersea Volcano. It has an attack power of 48.

Secret of Mana
The Doom Axe can be forged by gaining the Axe's Orb from a treasure chest by slaying fiend heads in the Mana Fortress.