Hyshian twinstones

CV {5}. Set up this endless spell wholly within 6", visible to the caster, more than 1" from all models, terrain features, other endless spells, invocations
and objectives. Place a dice beside it with the '1'
facing up. Each time a spell is successfully cast by
a WIZARD within 12" of it and not unbound,
increase the value of the dice by 1, to a maximum
of 6. Before a LRL WIZARD within 12" of this
spell attempts to cast a spell, they can add the
value of the dice beside this endless spell to