[quote=@Dark Cloud]
<Snipped quote by Lewascan2>

Haha, okay I'll be clear Alna has the means to bend universes to him whims, destroy realities with a flick of the wrist yet he doesn't because it isn't the gentleman's way.

EDIT: He could do anything you can do replicated with magic, transcending any and all laws of nature to do whatever his whimsy desires.
[/quote]
Unless he can simultaneously: locate every reality with a vital portion of the Entity (of which there will be hundreds to thousands), shatter the dimensional barriers they put around said realities, and then destroy them fairly simultaneously, it will pretty quickly devolve into a game of cat and mouse. And the Entity will hardly be merely running, so Alna would have to be playing defense too against a being with a literal Path to Victory power that they would absolutely be using in the face of such an egregious attack. They're hiveminds, so they can multitask like no-one's business.

And to reiterate, Entities don't use magic, merely high-ascended math backed by energy that lets them impose those new laws of physics on reality. It's not anything he can copy without the same level of planet-sized computer computational power. Sure he can probably think of a magical version, but the Entity way is not magic.

Point being, Alna's absolutely a monster and strong to a degree that boggles the mind no doubt, but a full-powered Entity can and will likely give him a run for his money, even if he's try-harding. Luckily, they're all dead now, so we won't be seeing such an utterly devastating fight come to pass.