A nimbus of sorcerous energy swirls around a Casket of Souls’ infernal form. So great is this power that the incantations of nearby Liche Priests become infused with a portion of the casket’s energy.
Whilst within 12" of a Casket of Souls, friendly Liche Priests may apply a +1 modifier to any Casting roll they make. Additionally, any model (friend or foe) that casts a Bound spell whilst within 12" of a Casket of Souls may apply a +1 modifier to the Casting roll.
Note, however, that this bonus does not apply to any Bound spells cast by a Casket of Souls.