[quote=Tyki]
swarm... as in metric fucktons... none of those four are able to break through their carapace. makarov takes an ungodly amount of time to charge up fairy law, and gildarts can't kill them all before they kill him. and by the time the other guilds come fairy tale and the surrounding town would be infested
[/quote]

How do you know they can't break through the carapace? How strong is it?