hmm...did some rerolls a few days ago and found satan, ryu-oh and amaterasu.
there is no combination of elements, but it's kinda work nice together...for story, raid boss and sp quests XD
ryu-oh frame A debuff and black propaganda-like skill, satan can reduce 1 charging orb so it's works well with ryu-oh
and amaterasu frame B debuff, deff buff+regeneration and blind.
maybe i'll keep it :O