Bound Spell with Power Level (5/8). Range 18", Type Augment, Duration Permanent. Characters that leave a Combined Unit are no longer affected by the Rune of Resonance. Once per Magic Phase, a single unit with at least one model affected by the Rune of Resonance may be chosen as an additional target of a Battle Rune that a friendly model is casting anywhere on the Battlefield on another unit (during step 1 of the Casting Attempt). All instances of the Rune of Resonance on a unit immediately end when a Battle Rune is successfully cast on the unit (regardless of whether as additional target from Rune of Resonance or as regular target of a Battle Rune).