What are you not getting? My characters powers are energy based but the type of energy and the character's appearance changes with the plate. I think that's a hell of a lot fairer and under powered that "time manipulation."
Ok, but I put my new powers in the SU and it's basically what you and Nideous told me to put except for my character taking physical traits of the type of plate he uses. I very much do not want to change my SU.
Okay buddy, here's our idea. We have a fourth type of character called the Dawn Children. You could be one of those instead. A main difference is that your power is likely weaker than a Harbinger (but still can grow stronger as theirs can) and you will not have dreams of Arceus.
You will have to alter your history a little bit. You could be:
a) Someone whose abilities awoke a long time ago and you were briefly in the Dawn Project until it blew up. Now you may be living an ordinary life.
b) The same as above, only when Theo began regathering everyone, he brought you back.
c) You woke up your abilities a long time ago alone and you have lived with them (though in this case your powers would be much more out of control)
d) Your abilities woke up recently and you are still struggling to understand them. Perhaps Theo will approach you in the course of the RP.
If you have any other ideas, feel free to drop them by one of us.