In the Warhammer Magic game the same cards that are used to determine whether a wizard can cast spells are also used to counter the enemy's magic. However, for now we'll allow one attempt to dispel each spell as it is cast. If your enemy casts a spell then roll a D6 - if you roll a 5 or 6 the spell is dispelled immediately and is not cast.

In your own turn you can also attempt to dispel a curse that the enemy has cast upon you. Roll a D6 and if you roll a 5 or 6 the curse is dispelled. If you have a wizard you may forgo casting a spell and instead dispel a curse on a roll of 3, 4, 5 or 6.