Being Made of Infinite Possibilities

[Lightbuster30]

I've seen quite a few people on this wikia who are claimed to be made of infinite possibility. One such example is Magnus the Red, who I've heard has this ability. There were a few others, but Magnus is the one I can remember off the top of my head. What powers exactly would you get from being this type of entity? Would you get any resistances or physiologies like Nonexistence? Would you get some form of acasuality?

https://vsbattles.com/vsbattles/2540845#26 Source for where I heard about Magnus being like this.

 

[EmperorRorepmeThree]

For Magnus this mean his being keeps changing because his essence is possibility. Therefore difficulty to manipulate in anyway. Whether it me mind manipulation, transmutation etc.