6 things to point out

1 odin dose like 8k damige to all bosses
2 ekio and phionix is usefull but dont use it too ofen
3 all of zidanes trance moves do about 9999 to necron when you hit level 65+
4 you quadruple vivis attack power by having him cast it on all your party when you have reflect on
5 necrons music is cool
6 he attaks 3 times then uses the status thing at the start