Runesmiths/Runelords only. One use only. When a spell has been cast, a Runesmith or Runelord can use this rune to dispel it automatically, without the need to roll dispel dice. This rune cannot stop a spell cast with irresistible force, and cannot be used to dispel Remains in Play spells other than at the moment they are cast.
A second Rune of Spellbreaking maintains the previous effect and, after the spell is dispelled, roll a D6; on a 4+, the enemy spell is lost to the Wizard casting it and cannot be cast by him for the rest of the game. A third Rune of Spellbreaking has no further effect.