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I've studied this a lot during combat.

I use beserk for my barbarian.
His frist attack is nice amd massive (it says it's gonna give me +28 attack and lots of threat. Fine.

But his next round of attacks (For five rounds) are far weaker.
Repeatedly this happens.

But his threat stays high for all five rounds, just not his attack power.

This really needs to be fixed. It's really broken.