Nitromyte

The Nitromyte is a key item in the Mana series.

Chapter II
The party is forced to retreat back to Maia after Altenish forces destroyed the bridge in Stonesplit Gap. Von Boyage, the local inventor, has just finished his new Cannon as a new transport alternative, but needs Nitromyte to ignite the fuse. He tells the party to fetch him some at the Dwarf Village located within Stonesplit Gap. The heroes eventually meet with Watts who gladly provides the goods for a hefty price. As an alternative, the party can obtain some Nitromyte should they defeat Jewel Eater deep inside Dwarf Tunnels.

Trivia
Nitromyte is the only story item in Trials of Mana to be obtained through multiple ways.