Casting a Bound Spell ignores the normal Casting Attempt rules and instead follows a different procedure. Each of the Active Player's non-Fleeing models with Bound Spells may attempt to cast each of its Bound Spells up to one time per Magic Phase. This model is referred to as the Caster. Bound Spells can be cast even if the same spell has already been cast earlier in the same Magic Phase. Casting a Bound Spell does not prevent the casting of the same spell later in the same Magic Phase, even as non-Bound Spell.
Bound Spell Casting Attempt
1 - The Active Player declares which model will cast which Bound Spell, and whether they will use 2 or 3 Magic Dice. If applicable, the Active Player also declares the targets of the spell. The spell is always cast with the basic version as Bound Spells cannot be Boosted.
2 - The Active Player removes the chosen number of Magic Dice (2 or 3) from their Magic Dice pool (do not roll them).
3 - The Casting Attempt is always passed.
Note that Bound Spells that contain a spell from a Path with an Attribute automatically also contain the Path Attribute Spell, and that unless specifically stated otherwise Casting Modifiers are not applied to the casting roll of a Bound Spell.
Bound Spell Dispelling Attempt
Dispelling a Bound Spell works exactly like dispelling a Learned Spell. If 2 Magic Dice were removed, the casting roll is equal to the Bound Spell's primary Power Level. If 3 Magic Dice were removed, the casting roll is equal to the Bound Spell's secondary Power Level.