The Flashfield is a pivotal battle and platforming mechanic.
Gunvolt can surround himself with an electrical sphere called the Flashfield. This consumes EP.
When using the Flashfield in the air, Gunvolt will hover, slowing his descent and allowing him to reach otherwise inaccessible areas.
More importantly, the Flashfield is Gunvolt's primary form of attack. While using it, he will automatically deal damage to tagged enemies regardless of their position. If a single enemy has been stacked with multiple tags, the Flashfield will deal even more damage.
The Flashfield also deals a small amount of contact damage to enemies who enter it, whether they're tagged or not. It can even block incoming projectiles, but be careful: energy-based projectiles are unblockable.