Life begins after death

After death an ordinary every day nerd meets a bored God of chaos who wishes to use Mc for their own entertainment. He is given a very specific set of rules to prevent him from becoming op immediately and as such make his journey more entertaining. This is his journey from average dweeb to op character in fictional worlds. Btw cover image is not mine got it off Google. it does have the whole spellsword theme I'm going for my mc.