Don't you have velika or espada?
Use Victoria just for +50% buff. Maybe 5* +5 Jupy will be a better dps in your case? Just give her a good weapon.
No velika or espada. I'll have to go through my 4* units too and see what's salvagable. I know I have 4* may hanging around.
You should really get your spike up to 6*, the overall damage is still better than your other 6* units. Also spike is really good at ruby farming. The faster you hot time the better.
Yeah. Might as well. I missed Thursday's daily dungeon (oops) but I still have enough elements to make the dark 5*. Just need to level/enhance the 4*.