Staff of Shadows question (corrected)

By Vagos, in Descent: Journeys in the Dark

I repost it with the correct text color!

If Overlord has the Staff of Shadows, can he use it to reroll one of his dice, or he can only force the heroes to reroll their dice?

Also, can Overlord use the Staff anytime (for any creature he controls, for every attribure test the heros make etc) or only when the lieutenant wielding the relic is involved? (he is attacking or defending himself)

Thanks!

I was asking myself exactly the same questions…

I´ ve played it according to the wording of the card "ANY roll" exactly like that - hell, it is an RELIC! ;)

Nevertheless it would be interesting to get additional opinions…