IN DXD AS THE ABANDONED SON

he was a professor in physics and chemistry but he died when he died he was in the void and accidentally comprehended the Law of space and time he was then reincarnated in DXD with a little gift from god he was born from veleana so he know he was a gremory but what he found out is he has no power of destruction what is going to do now? [Ding! congratulations host you have gained the card system] 'I am going to be the strongest just you wait!'