Helion Weapons
Summary
These are PVE weapons that can be crafted. They require a Level 3 Weapon Crafting Mastery. Check this link to get started on crafting weapons: System Crafting
Here is the list of materials you will be requiring:
They can also be obtained from Helion's Weapon Ex-Box. This drops from Shangri-La's Abandoned Qune Temple Dungeon.
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Stats (Helion vs Zuto)
Let's look at a comparison of a Helion and a Zuto Weapon. The Helion version has an insanely higher attack damage (8200~8802 vs 2826~3034) plus the bonus 6000-7000 attack from the rank options which makes it so much better when it comes to PVE.
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They are Epic Grade and thus, can be upgraded until +10. They can be socketed and gemmed like regular weapons.