Remains in play. Decay of Ages is a hex spell with a range of 12". The target unit must pass an immediate Toughness test or lose -1 to their Movement, Weapon Skill, Ballistic Skill, Strength, Toughness and Initiative. They must keep testing at the start of each subsequent Magic Phase until they pass the Toughness test, the spell is dispelled or the unit is removed as a casualty. If the spell is dispelled or the unit passes the Toughness test, the unit is restored to their original characteristics.