Arcane Artefacts

Once per battle, at the start of your hero phase,
roll 2D6.
During that hero phase,
you can use that roll as the result of a casting roll
for the bearer, or as the result of an unbinding
roll for an enemy WIZARD that is attempting to unbind a spell cast by the bearer.
You must say that you will use that roll
before the actual casting or unbinding roll is made.