By drinking this Essence, you become a prime target of various magical contractors out there in the multiverse, and a few other abilities besides:
*Immense "Potential" for the purpose of magical contracting. While you won't necessarily be on Madokami's level if contracted as magical girl in her setting, you still have potential undreamed of by all but those who have bizarre circumstances creating there insane potential.
*The ability to subcontract people, emulating the power of your patron for the purpose of empowering others.
*A fate of being contracted under the general genre that you are looking for. For example, you could choose to be contracted as a magical girl, or by a demonic pact.
*An ability to internalize the gifts granted to you.
*Immense skill in making the most of a potential contract.