"I, the Restorer, will have the systems myself. And I'll use them to restore the peace that was lost since the birth of mankind!"
—collected some century ago.
***
This man was Midas. He was not the owner of a System. In fact, he had secretly existed before the Great Rendell was murdered and the world's suppressed magic was forever restored. So, he was neither a successor nor someone who possessed a restored ability. Much similar to the Wizard in this regard.
Not all Gods had gone the route of having a successor take their roles through a system. Most Gods, mainly the less powerful ones who were not a part of the Titans of Norse or the Greek Olympians, simply visited Earth and chose whoever they wanted themselves without all the system mayhem. Midas, a bit more than a demigod but below a true god. was a bit different. He chose to not give up his power at all and walked the surface of the Earth in his own human body.