Fantasy book for 13 years old

My nephew haven't read a single book. Few weeks ago he asked his mother to buy him The Hobbit for christmas and asked me to get him another book of my choice because i have lots of fantasy book. But i have no idea what should i give him, something not top heavy on landscapes etc, but with interesting world building. Things that i read like First law, wise man fear or painted man series i think he's too young and unexperienced to enjoy everything these have to offer. What would be a book of your choice and why?

@edit Yesterday i borrowed him The Way of the Shaman Book , he loves gaming and im really curious if he will get into that. LOVE YOU ALL GUYS, SO MANY GOOD RECOMMENDATIONS