From Epitaph Player Wiki
Impale is a melee command requiring a two-handed pierce weapon. With it, you attempt to launch an extremely powerful, damaging blow at an opponent. This command can only be used from an offensive stance.
- impale [at] <target> with <weapon>
- Impale the indicated <target> with the indicated <weapon>.
- impale [at] <target>
- Impale the indicated <target> with an appropriate <weapon>.
500 command points.