PDF: https://www.somanyrobots.com/s/Warlock-The-Chained-Patron.pdf
GMBinder: https://www.gmbinder.com/share/-OtArD8Iw2bcYMroAw8i
Last month's poll-winner, The Chained Patron! The patron is a creature that's spent untold aeons trapped on a prison plane, so much so that it's becoming one with the place. (If you want, you could reflavor it to a cosmic jailor, but that seemed more specific to me).
Your Expanded Spell List adds a few spells related to restraints, imprisonment, and locks; it's admittedly slightly ropey because most of the spells you'd want are already on the warlock list. Flailing Chains is your primary feature at level 1, letting you conjure up a chain to lash your enemies in place. Entrapping Torment gives you bonus damage against creatures that are lashed, grappled, or restrained. At 6th, Pocket Prison gives you a quick escape, a way to take yourself and your allies to a (cramped, uncomfortable) extra-dimensional hidey-hole. Hungry Chains at 10th doubles up your Flailing Chains for twice the control. And Prison Plane at 14th lets you consign enemies to, well, a prison plane.
As always, you're invited to come discuss and offer feedback in the comments or on Discord!
Art: Chained Brute, by Dan Scott © Wizards of the Coast LLC