Well, it is not a necro if you actually add something to the tread
Reality Marble, Return of Origin
Eternal night. A realm where no light shines from the heavens. Whether through sun, moon or stars, none are present in the cloudless black void that is the sky within this reality marble. Still, it is rather easy to see the surroundings. Not that there is much to look at. The surface of Return of Origin is a stereotypical prairie, with tall grass reaching up to one's hips (this applies no matter what one's length is. This is a purely psychological aspect of the reality marble). In fact, the grass and the opponent(s) are the only things you can see in Return of Origin.
Welcome to the harbor of beginnings. In RoO no use of magic or sorcery is possible. To be more precise, if you were born with your circuits open, you are theoretically capable of performing magic within RoO. Because this is almost never the case, as a rule of thumb it is just said that you can not perform magic within it. This is because your original self resurfaces within RoO, the you if no extraordinary changes occurred within your lifetime up until this point. The you that never opened your circuits, never received a magical crest or attained power or abilities due to completing a task or quest. On top of that, you lose whatever equipment or weaponry you possess for the duration of the reality marble's manifestation. Both the user and the victim are subject to these rules. The only exception are clothes provided by the reality marble that are unisex and identical with only the size possibly being different.
This reality marble is quite circumstantial in its use. It is perfect to use against dead apostles, who were born human, or against magi. It is however suicide to use against those that are naturally superior to yourself. Demi-gods, true Ancestors and full gods (like Medusa before being cursed) are rather obvious examples of this category. You should also realize that you as well as your opponent(s) will have to completely rely on unarmed close quarter combat skills. In here, only the conditioning of your body and your fighting instincts matter.
It is interesting to note that you assume your true age as the being you were born as when entering Return of Origin. This effectively neutralizes every and any attempt to alter your lifespan. Dead apostles whose total existence is more than about a century will, in the best case, be extremely weak and more or less unable to fight back. However, it is more likely that they dissolve into dust. Any and all curses or enchantments cast upon a person after their birth will all be countered within RoO.
When RoO is not manifested, the user could, by holding anything (or anyone), undo any changes upon that which he holds in the same manner as his reality marble would. If the user really goes over the top with it, he could even reverse time and its effects upon that which he holds. It is as such not impossible to de-age someone or return an object back to its raw, unrefined materials. When letting go of it, the changes he brought forth will gradually (in a matter of minutes) disappear.