Meta Space-Time Manipulation

Hello all in your opinion the character who has abilities =Nothingness Manipulation/Meta Space-Time Manipulation/Completeness Manipulation

How strong do you think his strength will be?

So I'm sure many of you users have stumbled upon the page Eternal Existence/Embodiment. but how many of you know what it truly is? Being without Beginning or End, Beginningless and Endlessness, sure that's the summary of it, but what is that exactly? Three words; Is, Was & to be. In other words, there is no period in time that you weren't present, the nature of time does not apply to you. Meaning you're Never changing, you are constant, without change, without limit, without time, without flaw.

Now The opposite of Eternity or What Is not Eternity?

Time, the answer is time, "Where there is a beginning there is also an End". The Start of Something to its very end, and in between You have change, the difference between the two is one is without Limit (Eternity) and one that is Finite(Time), now highlighting the Key Fundamentals: Time, beginning, and change. all these are of finitude why? there are many ways to answer this and here's one, Measure. you can grasp it, hold it, see its end and its beginning, it's change. from one period to another over Time, in essence, It is not constant, and arguably it could never be constant. So, time is the parameters of finitude, beginning and End, up and down, In and out and all of this as well sparks the light of change and measurement.

Beyond Time, Beyond Existence, Beyond Beginning or End are all Things Endless, Changeless, and Constant. That is ETERNITY which is Greater than Time and that's why I also believe that Eternity is the source of Infinity and Unending. I mean What else could it be? surely not time as it has a beginning and an End, it's neither space, nor existence, nor change. Additionally, since space and time are Intertwined They both are of the same faces. All things Finitude.

{any preguntas, remarks, outbursts, feel free to comment}

What are y'all's self-insert characters? Mine is Zander Ennis, a human born without powers who eventually becomes an Arch Demigod with the power of Meta Space-Time Manipulation.

What are some creative ways to use Space-Time Manipulation and Meta Space-Time Manipulation? It could be during battle, practical use, everyday life, exploring, travel, skill, et cetera. I just want to get some cool ideas on how to use it in different ways. :)

Meta Space-Time Manipulation realistically allows someone to be Omnipresent, right? Well, if so, would they become an eternal being instead of an absolute immortal?

What are ways that Meta Space Time Manipulation can overcome Absolute Will, or, to be precise, the ability to exert your will on anything and everything? I'm trying to figure out ways on how my self-insert character could beat my strongest villain.

How strong is Meta Space Time Manipulation? And what can it do at its best?

Like the title saids

In my description, the ability to make dimensional entities/beings/objects the same level of dimension, no matter how high or low, or even outside/not in a dimension or someone even transcended dimensions, they shall interact with each other as if they in the same dimension even though they not suppose to be seeing or harm each other. So what do you think of this power, useful? and is there a power already existed that exactly the same to this, please tell me, because I tried to search and couldn't find it...