When the team leader activated the formation, hundreds of yellow lightning bolts struck the monster. They took it by surprise. Because their group acted silently, the monster didn't even feel it was surrounded. Only when the electric shocks went through its body did it realize it was under attack, but it was too late.
Mana of the twelve magicians had been poured into that formation. Sure, the monster was of the first rank and far stronger than any of them, but it couldn't resist that kind of power. In a matter of seconds, its body was toasted by lightning. For the last seconds of its life, it was in true agony.
<Formations are really serious weapons... I think if they had just activated this spell without formations, it would have done almost no damage to this monster. Now this terrible monster died under the onslaught of lightning.>