Petrusite is a powerful element only found on the planet Helghan and in a few of its fauna. In Helghan's early years, it was used to supply Vekta and Helghan with energy. But when Scolar Visari gained power, he used this to create weaponry. The Arc Tower, VC5 Arc Gun, and even more weapons are powered by this source.
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Garza inspects a sample he uncovered.
The devastating VC5 Arc Gun is powered by Petrusite.