How do you destroy air defense level 8?

How do you destroy air defense level 8? To destroy a level 8 Air Defense, you require any of the following: nine level 1 lightning spells. seven level 2 lightning spells. six level 3 or level 4 lightning spells.

To destroy a level 8 Air Defense, you require any of the following: nine level 1 lightning spells. seven level 2 lightning spells. six level 3 or level 4 lightning spells.