I think dragon Garon, because you can pair a high movement unit (or just have your avatar be a flier or horseback unit) and then fly to him and smash his face with the Yato.
I really liked shattered stones, because its the bad ending of my Fire emblem game. I think it also won. The reason why is I've been thinking. What if seth died? Shattered Stones gave me a small idea.
ALSO SIGURD