In the Rulebooks section for magic, it says: You got ONE attempt to to dispel. It also says "Some magic items may allow a wizard a second dispel attempt, or reroll, but these are exeptions and in normale circumstances only one attempt can be made to dispell a spell" It also says... Oh, I kind of figured it out myself You have to declare uses of items before even rolling the dices for dispelling. That makes it clear enough to me. Well, sice I already has writen it down, I might as well post it. If other have doubts... Just to fill out what made it obvious: "It is not permitted to roll the dice and then decide to use a magic item retrospectively." Looks like I got myself an answer