Marcus was an average man who did everything he could to become more powerful. Marcus had a dark mindset from birth and sought any way to become powerful, but before he could achieve it, he was dead.
He died because of a rabid dog that killed him.
He will be reincarnated into another, magical world in the body of a mud golem, with the spirit of the rabid dog at his side.
The best book I've ever read [img=recommend] (joke)