Talk:Surrounded by Fire/@comment-25957441-20150524150543/@comment-25957441-20150525094708

Nop, にしか is always used with a verb in negative form, here it's 使用できる.

Since nor english, nor japanese is my native language, it might be hard to explain for me, but "にしか 使用でき ない" litteraly means something like "can't be used if not for [previous element]". Since you negate this 2 times, it'll be translated as "can only be used [in this case]".

I hope I was a bit helpful here. ^^'