Hey, Astoria! I think you have a really great idea for a senshi and I love what you've done with the sphere! Absolutely everything looks good to me except for the eternal attack; I think up to sixty seconds of almost absolutely protection for eternal stage for her and up to three other characters. I think if you want that magic, it would be best to cap it at 40 seconds but make it able to be used twice per battle? This would ensure that you could still get your use out of it but it isn't guaranteed to last for a huge chunk of the battle (when battles usually last for less than five minutes). If you are interested in changing the duration to 40 seconds and the usage to twice per battle I would be happy to drop a stamp; if you don't like that idea then we can work together to try and come up with something else!
If you have any questions, comments, or make any changes please give me a quote and I'll be back as soon as possible!