[@Noxx]
[quote]The sunken world (Passive): Wherever she steps the world under her feet changes into a portal to a decrypted ancient place that mirrors the above the world completely sunken underwater and nearly devoid of life. Unless Evelune is grabbing ahold of someone she is the only person who can enter that portal, this allows her to turn any surface into a swimmable one, the area she is directly under will also change into a portal  that moves with her as she swims through the sunken version of the real world, though her speed in the water is nearly four times as fast as when she's on land. Additionally it should be noted that the portal that leads to the Sunken World can be expanded to a massive twenty foot radius around her body.[/quote]

Not to make everything analogous to Naruto, but having a portal to a personal pocket dimension no one else can access [i]constantly[/i] under their feet is damn near close to Tobi levels of absolute defense. That they can expand it to such a large degree, pull everything into an underwater battle with a 4x speed advantage to Evelune is also incredibly powerful, but it kinda pales in comparison to a constant escape hatch to survive any attack of any scale and launch herself back out at her leisure, speed  boost or not. 

[quote] Devil Arm: 

At first it was a long scimitar forged of fine metals that held the force of a [b]hundred tidal waves[/b] within each blow[/quote]

That's some dangerous hyperbole right there. Should probably change that since the literal force of a hundred tidal waves is beyond the pale of any magical girl's wildest dreams.

I'd quote the entire Blood Manipulation power, as I don't think blood pressure has anything to do with Adrenaline responses. And Blood Manipulation is always iffy, even if this specifically describes it as a self buff only.

[quote]Test of soul / Undertoe: Eve can drag people under to the sunken world from the surface world if she has at least part of her body already submerged, only the person pulled  and Eve herself can exit at this point and if the target can manage to fight their way to the surface they will be inflicted with a curse that will open a portal under their feet that which they themselves cannot enter but reveals their position to Eve for five minutes. [/quote]

Why would a magical girl need a curse like this? Corrupted or not there powers are for fighting Nightmares first, and other magical girls second. Seems off to me, at least.

The background...is Chtullu cult made her evil by looking at a cosmic horror. I can't say with any certainty that cults of that nature exist in this world. More often then not the system of magical girl universes is rather limited in scope, but I'm in no shape to judge any farther in that regard.