Text (FE+errata): 1/1. ; {1}{B}: Counter target black spell unless that spell's controller pays {B} or {3}. [Oracle 2009/07/08]
You can use this ability multiple times on one spell to force your opponent to use more than one mana to prevent the spell from being countered. You can even use this ability, let them pay, then use this ability repeatedly. [Aahz 1995/01/19]
Extended tournaments (see Rule 913) have banned this card since 1999/10/01.
Note - This card was creature type "Thrull" until Oracle 2007/10/01, when it became "Thrull Wizard".
