Crusherknack spell?

[Sand]

The magic item PDF lists this as the On Hit effect for the Smasher, but I can't find the spell in the manual (probably just not seeing it). Can anyone point me in the right direction?

[Psitticine]

I believe that's just referring to the Smasher's built-in bonus against "inanimate" foes. (Not that anything lumbering across the battlefield, flinging your troops about is truly "inanimate" . . . but you know what I mean!)