The memories of mat all signify something the part where he is a battle leader of some type in all of them say he will be an amazing fighter and battle leader (and that he is good at stones according to thom) but the memories all have him on the side of the aryth ocean where everything takes place. Does the arrival of Tuon change this? Also was he Ta've'ren in all of them? this goes for rand mat and perrin too also are all the heroes bound to the wheel of time and horn of valere ta've'ren?