Many that are reading this now might be asking, "Why would a succubus want to keep a familiar? They are just prey after all! They are simply cattle for us to feed upon!" To this question I would answer that cattle die off and must be bred. It takes a lot of time and effort to do all the husbandry of raising mortals to feed upon. That is of course if your intentions are instead to constantly be hiding in the shadows to prey upon the weak, always trying to keep one step ahead of the local sheriff. Granted many a sheriff can be bribed with a simple blowjob, but that is not always guaranteed. Ask yourself this. Would you rather risk being chased by an angry mob with torches and pitchforks at the chance of possibly sucking on the weakest in their lot? Or would you rather be openly treated like a princess, held in the highest regard by one of the strongest in their community? The potential orgies will ensure that you will never go hungry. This is the choice you have to make on your own.
As it is a more prudent choice to keep a host, and to preferably keeping them healthy, you must learn self control in how you milk their cock, or pussy if you prefer. You will obviously want to share your host among your coven. There is a certain enjoyment of seeing your fellow sisters with just a glint on envy in their eyes as they suck and feed upon your succulent gift. Just be certain to proclaim your host as master or mistress when introducing them to your coven to clearly denote they are not to be slain. And of course, do not devour the entire soul of any host, be it your own or one belonging to others in your coven when they cum inside you. This of course being the ultimate act of self control, you must not suck their cock completely dry. One never knows, you might even find them to be useful. Perhaps they have some talent that can be beneficial to your needs. Do they hold political power in the local region? Do they have a trade or other useful skills that can be helpful? They may end up having more uses than to simply being your dinner.
The one thing to always observe is that even with Mind Wipe and Brainwashing, the host will still have needs that must be met. This of course being that we must keep the illusion that they are our masters! Yet more importantly that we keep them satisfied beyond simply feeding on their orgasm. Spend time with your host, learn of their hopes and dreams beyond what carnal thoughts emanate from between their legs. Not that such thoughts have any less importance, but those should be fairly obvious early on. However, there is a difference between simply making your host cum, and taking the time to making them desperately needing to cum. Savor every little tingle and throb, drawing out those little aches of need. Not only will the host enjoy the final orgasm far more, the greater the power you will derive from milking them. Do not simply keep your host as your dinner. That will be seen by your fellow coven members as being lazy. Raise a host that you can take pride in your ownership. Raise a host that you want to be seen out in public with!