Kelsear is a SCA with some superpowers and he has gone to this plantation to stir up trouble. He's going to use his alomancy to do it. You don't really get a clear picture of what it is, just that he burns tin at one point in his body,. which means that he has a reserve of the metal Tin allows him to have like super senses so he can like see and hear and feel like better than usual.