The ability to manipulate anything that can be related to the user. Sort of a Sub-Power of Meta Probability Manipulation.
Capabilities
Users are able to alter anything that can be related to them (from memory or their knowledge) limited by their knowledge of the superpowers
For example, users can possess a flowershop owner because the concept "flowers" can be found in the memory of the user as the user once had a memory of smelling a Lilly, which is a type of flower
Or for example, users can redefine the word "sentence" to mean "a large oval object that can be cooked (eggs)" because in the user's past, he/she had been to an english lesson where the concept "sentence" is first taught
Or for example, users can read the minds of his/her former friend because he/she knew him/her in the past
For more combat oriented examples, user can put out the fire send by a fire user, because for reasons like: his/her friend is a fire user and/or he/she had faced against a fire user before in the past
Another example: If you photograph of e.g. David Beckham, then you can manipulate his life and himself in any way you like, as long you know how to do so, without you actually be present nearby, as long you still have that photo in possession in some form.
Because of this, anything that can be related to the user (not necessary involving the user, unlike Personal Probability Manipulation) can be manipulated in any way possible, that is, users can use any superpower he/she knows on the thing that can be related to him/her
Therefore any Omniscient who has this power is naturally Omnipotent, because EVERYTHING can be related to him/her
This power, like any power involving probability, may be limited to the context of the story, the array and variety of choices and manipulations are still immense, and is nothing to be mocked at, especially if the user is a very knowledgeable person, as he/she is more capable to make absurd relations that can make his/her target be related to him/her (e.g. Apple->Red->Rainbow->Blue->Ocean->Whale->past experience playing with whales, thus he can e.g. explode the apple with the flick of his fingers).
Limitations
- Anything that cannot be related to the user in any way cannot be manipulated. Thus for anything that first experienced by the user and the user does not know how to comprehend it, then the user has no control over it
- User's capability is dependent on his/her history/course of life (may involve cross reality and time travel), memory and personality traits, thus is susceptible to changes made by time travelers, Time Manipulation users, Personality manipulators and Memory manipulators
- As mentioned, the arsenal of superpowers that the user can use is limited by the user's knowledge (cannot use powers he/she doesn't know)
- Like all abilities involving Probability, the choices and types of manipulations may be limited to the context of the story.
- If necessary, Inset additional limitations to prevent overpower