Lightning is a spell which will slow down enemy units as well as damaging them. It works well on troops wearing metal Armor. The units most heavily effected by this are knights and Paladins, however, Heavy Infantry, Dark Elf Knights, and Orc Heavy Infantry are still affected, but to a lesser extent. In Kingdom Under Fire: Circle of Doom lightning is not a foe to laugh at due to the fact that it will continue to hurt and will cause staggering. Due to this, the only way to beat it is with a weapon of willpower which will stop the staggering.