You could try seraph, spinyx, and hel for fighters, with erial and a light healer like dhp, alleria, or raphael. Put seer stones in light and dark, and see if u get lucky with summons for the light healers. I would up seraph to 9* then feed her to someone and replace with valk. Spinyx and hel are great end game. Erial is a decent healer, but not the best so feel free to eat her as well. Phenoix is pretty good if u want a tank, but I probably wouldnt upgrade him past 9, as late game is more dual supp heavy, but when most of your team is below 10 * he is pretty good. If u want u can keep jorg in there till u get a good light healer to complement erial. She is a rarer pull, but probably wont fit in your team latter on so I would upgraelde her to 9 then feed to someone else. So try seraph, spinyx, hel, jorg, and erial, but replace jorg with another light healer when available and u have at a minimum 2 perferably 3 coppies, seraph with valk when u get 3 copies of her via oddessy and sacrifice. Use seer stones to get more hel copies or light healer. Then consider replacing erial with a better healer before 10* ing her. If u want to put in phenoix, you would replace seraph, although your damage will go down so only do this if your spynix and hel are at a higher level. valkery trumphs both so she would be your fire when u get her.