[quote=MagusDream]
She'll hold back a lot of her power, I swear. I don't intend to use her, or my other char that is OP at full power (Necrox, if anyone asks. Flandre is powerful, but compared to them, she's nothing.). And also, there will be no other OP characters joining my side.Also, just to point out, my Good characters (Necrox, Stella and Lilly) will have the other two (Cruxis is Neutral, Flandre is Evil).
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I understand the need to create OP characters, but Lily's ability to control all magic makes her effectively omnipotent. Not even the other OP characters will be able to harm her, and any combat she is involved in would be instantly resolved in her favor. Even if she was truly neutral she would be far too powerful.
Now personally, I am less interested in harping on about this than I am in solving the matter. As such, I believe there are multiple ways in which this issue can be resolved
The most obvious solution is to remove Lily as a character, but this is unsatisfactory as you wish to play her, and thus will be discarded until further information makes it a valid option.
Secondly, we could nerf Lily, making her less powerful. This retains her as a playable character, and ensure that the balance of power is more or less restored to it's proper state.
The third option is to create a reason that Lily would act in a way that would prevent her from tipping the scales all to badly. This would prevent her from killing of all the evil characters, although this is only a temporary solution, as certain circumstances might make this excuse invalid.

Personally, I believe that the easiest way of solving this is to nerf Lily. I personally would do this by stating that she is the core of all magic from her dimension, as opposed to all magic everywhere. Alternatively, being the core of magic would simply make her a nexus of magical energy, and not grant her control of all forms of magic.

If anyone believes I am going about this the wrong way, our that Lily is not, in fact, the problem I make her out to be, then I would be glad to hear anyone's input on the matter.