Talk:Warframe Augment Mods/@comment-192.154.150.180-20141230062125/@comment-10743657-20141230062923

This is likely due to the Syndicate weapon effects: Weapon Augments. When those are triggered, you get a glowing circle and aura around your Warframe.

There is a Warframe augment or two that gives a similar effect though. Furious Javelin has a smaller circle when the buff is activated.