You summon a demonic seductress to do your bidding, but it's clear to her that you're after something more specific. With your hard cock in your hand you follow her jerkoff instructions, stroking to her sensual voice and hanging on every filthy word of her breeding fantasy. She knows you're desperate to touch her, to feel her soft skin and her wet pussy, to fuck her raw. Demons ovulate too, and jerking off while envisioning flooding her fertile pussy is exactly what will send you over the edge. That and her countdown of course.