It's natural for players of this game to become more fond of specific Factions of summons than others. For my part, I immediately decided to choose Kael, the Dark Elf when given that option, and afterwards, decided my favorite factions are the Dark Elves, Undead, and Demon Spawn (I like to play evil characters in games. >:D ). That being said, I see the value in receiving summons from other factions that can be used as Sacrificial Pawns for leveling-up and ranking-up your main characters. All the same, I also am one who wants my main characters to be from the aforementioned factions. Are there any tricks or mechanisms for summoning and receiving characters from specific factions, when attempting to acquire characters you want to keep, vs ones you wnat to upgrade for upgrading others?