Complex sentence: This was followed in 2006 by', the first book in his Mistborn fantasy trilogy, where "allomancers", people who have the ability to "burn" various metals and alloys after ingesting them can enhance senses and allow control over powerful supernatural forces.
Split into simpler sentences: This was followed in 2006 by', the first book in his "Mistborn" fantasy trilogy. The Mistborn are "allomancers", or people who have the ability to "burn" various metals and alloys after ingesting them in order to enhance senses and allow control over powerful supernatural forces.