The Plasma Sword is a simple re-texture of the Roblox gear, elegant blade. It is available to all on the Vaktovian team at Outpost Pyro and most other forts of the Vaktovian Empire. After the dynamic lighting update to ROBLOX, it gained a faint red glow around it. This is sometimes a tactic for raiders as they can locate Vaktovians - and it also awares other Vaktovians of they are allies.
Many complain about it being unfair, but the damage is the exact same as the raider's sword.