This is a Martial Stance. If a creature is killed with a two-handed weapon attack while in this stance, the wielder has a chance to maintain his momentum and continue the attack onto another creature foe in the room. This chance is 5% + 15% per rank. The secondary attack will have an AS penalty of -25 and cannot occur more than once per attack.
If the warrior fails to maintain his momentum into a second attack and has 3 more ranks of Staggering Blow, there is still a chance to knock the corpse of your slain foe into another foe in the room. If you are successful, that foe will suffer a RT penalty.
You swing a bronze-tipped kelyn claidhmore at a snowy cockatrice! AS: +139 vs DS: +13 with AvD: +31 + d100 roll: +45 = +202 ... and hit for 94 points of damage! Left leg ripped from socket at the knee! A snowy cockatrice writhes around, screeching! The snowy cockatrice screams evilly one last time and goes still. Barely breaking your momentum, you continue on to attack a greater ice spider! You swing a bronze-tipped kelyn claidhmore at a greater ice spider! AS: +114 vs DS: +47 with AvD: +31 + d100 roll: +89 = +187 ... and hit for 79 points of damage! Hard slash to the greater ice spider's side! Right arm no longer available for use. A greater ice spider flails in agony, cradling its mangled right foreleg. The greater ice spider collapses to the ground and dies.