In Roblox Parkour , I couldn’t verify a reliable, game-specific effect for “lightning aura” from the available result, so I can’t confidently say it gives a certain perk. The most likely interpretation is that it’s a cosmetic aura unless the specific game mode or item description says otherwise.

What it usually means

In Roblox games, a “lightning aura” is often just a visual effect around your character, sometimes tied to speed, power, or a special ability. One result about another Roblox lightning ability describes an electric aura as giving damage and high speed, but that’s from a different game and shouldn’t be treated as proof for Parkour.

Best way to confirm

Check the in-game item description, shop tooltip, or the exact game’s official page, because aura effects in Roblox are usually game-specific. If you want, I can help you figure out which Parkour game you mean and narrow it down.