Smaller foes will be instantly swept off their feet.
The attack is ineffective against several larger creatures including Drakes and Chimera as the blade hits only the more resistant parts of the monster - to knock these down strikes to the head or heart, or an attack with more height such as Upward Strike are far more effective at knocking down.
More effective at knocking down than damaging.
All three tiers swing almost 360° around the warrior.
The increased radii of the higher tier skills are indicated by the 'shockwave' around the warrior.