Downkeep
"Insect, it is time for me to step into this pitiful plane! Find me a host, worm!" you command Ahmed.
"Of course, great one. I will find the worthiest to host your body."
Most of your cult are just part of Zachary's clique, so most of them are 15-19 year olds, but they find the most physically fit cultist among them, Samantha Walt, who's been training all her life to be an athlete.
"Um, what are you gonna do to me?" she asks Ahmed, sweating with nervousness.
"You will rise to be the Chosen of Zurqueos! You will become great, child!"
"So, I'm getting promoted?"
"Yes. More or less."
He cuffs her to the altar and begins the incantation. An hour or so into the ritual Samantha has slipped into a trance, where her soul leaves her body and enters the other plane. She sees you in your truest form, her eyes widening in awe and horror. You consume the soul greedily, feeding on her energies. Then you enter the host and possess the body. Samantha Walt is no more. Her blonde hair begins to show signs of age, some white strands appearing even though she's 19. Her eyes take on an evil, demonic look. Her nails and teeth sharpen unnaturally. You are pleased with the changes you've made.
You consult her memories to find where she lives, break in and leave the note you've prepared earlier. You're a cunning little demonhost, aren't you.
You return back to the conclave, arms outstretched. "I am Zurqueos! Weep, worms!" No one really weeps, but they applaud nonetheless.
Upkeep
You enjoy your new, physical body, but it would feel better to actually form your true body here. This body has its benefits though. From afar you look completely normal, until they go up close and see your horrific teeth and soulless eyes. You decide to wear a hat and a jacket to hide yourself as you head to Aston, even though today is scorching hot in the desert town. Apparently they nobles are holding a cooking contest later today. Prize is a brand new grill.
Suddenly a pang hits your stomach. Hunger? Human hunger? This is a completely alien feeling to you, but your body forces you to obey it. Gritting your fangs, you head to a diner. Taking a glance at the menu you decide to have an omelette, because eating unborn babies is what demons do.
"Give me an omelette, you insect!"
The diner lady, who might not be a lady, towers over you, her build twice the width of yours. "I'm not gonna give ya your meal with that attitude, missy."
"Insect, give me an omelette!" She stares you down. "Insect, give me an omelette, please..." you grumble in your most pouty face.
She nods and returns with an omelette. After breakfast you have nothing else to do but return home to the conclave. Zachary waits for you there, holding a book. "My master, I bring you requests from your servants," he says, opening the book to show the notes he's written.
Quest I: We need weapons! Raid the guard armory. Devastation.
Quest II: We need our name known! Kidnap a famous person. Mixed.
Quest III: We need more minions! Corrupt local people. Domination.
Resources:
1 Giant Cave Scorpion
12 Humans
2 Commanders (Ahmed and Zachary)
You, in mortal host.
Your mortal body allows you to affect the mortal plane. Your demonic soul empowers the body, allowing unnatural strength and speed. However, your body has mortal needs and can die, and your soul will be weakened upon death. Watch out.