First of all send a message of me who can travel through the universe and has meta ability creation to give me the same powers gain a army of me to eventually do a war against each other in a empty void world where the only reason it existed was so that the last one standing would be the originator of the powers and repeat the loop and cause a new war across the omniverse of alternate me to cause everyone to make either utopia or cause the death of the omniverse and even then I always come back with battle since there are always more of me that are alternate some powerful some weak ,some good, some evil even so chaos shall happen

I would achieve Unity by fusing with all of them. An infinite fusion.

I'll talk to myself, literally

Guess I'll go meet my female self and befriend her or something.

Meanwhile the manga: I'll be my own wife

Me: what

I'd just use Alternate-Self Manipulation and it's application Alternate-Self Mimicry, to copy the powers of my alternate selves gaining Nigh-Complete Arsenal. Containing only the best powers and no trash abilities, my arsenal would be perfect. ¯\_(ツ)_/¯

Basically send a message to a good alternate version of myself that has magic or Fictional Travel and ask them to send a genie or something with wish granting properties to our world and I'll send him something from this one and we do this every so often till we don't something from the other.

That is if that version of yourself has a decent rank on the magic system

Create an Immortal/Indestructible version of myself that can warp reality at will, which will then fuse with me. After which I will build a court of me that will reside outside of reality creating more me, across the multiverse, linked to a hive mind of sort that will connect all of my parallel selves energies into one that is ever expanding field across the Omni verse . Until we have a decent chuck of the Omni verse under our rule that we will absorb into ourselves after we all fuse together. And continue on an endless quest

of expanding to gain knowledge and power.

Eternally Transcending everything.