What he said Lol. Would be rather OP if she could just use it whenever she'd want....even though that would be real cool.Not necessarily, only when the situation calls for her to use it. When mavis gives it to her then yeah, but it ain't a permanent stay technique.
This is wrong, refer to the previous statementsWell, she first used it on tenrou island.. then she managed to use it again during the grand magic games >-> so clearly she has it permanently