It seems Blade Rush just doesn't work correctly nor does it have the correct Burn. The Burn is 0 at level 6 without gathering power. The only way I have found it will actually work is by using Kinetic Whip. As soon as Whip is not toggled the character teleports but never swings the sword to deal damage.
You can see in the image log below where it's used but no damage happens. And the first image just shows 0 burn without actually using any gather power at level 6.

It seems Blade Rush just doesn't work correctly nor does it have the correct Burn. The Burn is 0 at level 6 without gathering power. The only way I have found it will actually work is by using Kinetic Whip. As soon as Whip is not toggled the character teleports but never swings the sword to deal damage.
You can see in the image log below where it's used but no damage happens. And the first image just shows 0 burn without actually using any gather power at level 6.