Staff of Raukhamon

Bound Spell, Power Level 4.
The Staff of Danmation contains a powerful spell that fills the undead with renewed vigour.
The bearer can release the powers of the staff once in each of his Magic phases. All Undeati units within 12" are affected by the Hellish Vigour spell (see page 59).
Roll a d6 each time the Staff is used. On a roll of 1, the Staff is temporarily exhausted and can't be used again that battle