Well... there are Goblins and Abominations.
maybe there is mana but its not real, its just Stamina, at best it seems like that there will be no Dreamy flashy magic of rainbows, but instead its just Demon arts and Blood magic and sacrifices, the type that can get an ugly scientific explanation.
his is the point that does not guarantee that to obtain a magical creature, a summonable beast, a sacrifice is not necessary and I have a problem accepting other than real healing abilities, a combat and magic build only on the succubus side or being reborn as a abomination the self-healing ability involving amulets and desecration and to correct this I thought of a summonable familiar that would act to correct imbalance in combat, but I consider it very unfair that Lona does not have her own mount or an invocation as a mage, her perfect "Control of and Knowledge in Mana" this would prove to Big Mama her talent for magic.
Note: Unicorn would be your standard and familiar invocation as a mount and assistant in matters involving healing, protection and transportation, but as I know that Lona will not, will not maintain her physical and mental purity, could be corrupted by various activities of lust, it is likely that her invocation and mount were corrupted by all this and became a Bicorn and demanded carnal favors from Lona in exchange for support and help, that would make a great quest.