Whenever an enemy unit casts a spell, allied Vigilant units target that enemy if it is within their range. The damage of the next attack against this target is increased by 40%.
Whenever an enemy unit casts a spell, all allied units target that enemy if it is within their range. The damage of the next attack against this target is increased by 50%.
Whenever an enemy unit casts a spell and is targeted by the Vigilant alliance, the first attack from each unit due to that targeting change does 50% more damage.