Eldritch Domain

Eldritch clerics worship the god-like entities of the realms. Examples of these beings included Atropus, a stillborn god; Zargon the Returner, a being of intense power from the Far Realm who escaped the plane of madness to destroy the world, but was encased in ice by elven mages. Such clerics are often labelled as mad cultists by those who do not understand the machinations of those beings.

Eldritch Initiate

When you choose this domain at 1st level, you gain proficiency in the Arcana skill, and you gain two cantrips of your choice from the warlock spell list. For you, these cantrips count as cleric cantrips.

Channel Divinity: Pact Magic

Starting at 2nd level, you can use your Channel Divinity to petition your deity for arcane power. As a bonus action, you can regain an expended spell slot of 1st level or lower. The level of the spell slot increases by one when you reach 5th, 9th, 13th, and 17th level in this class.

Earned Mysticism

At 6th level, your deity reveals to you the hidden secrets of the multiverse. You gain two eldritch invocations of your choice. You gain an additional invocation when you reach 10th, 14th, and 18th level in this class. Your cleric level counts as your warlock level fir the prerequisites of of these invocations. 

Additionally, when when you gain a level in this class, you can choose one of the invocations you know and replace it with another invocation that you could learn at that level.

Potent Spellcasting

Starting at 8th level, you add your wisdom modifier to the damage you deal with any cleric cantrip.

Eldritch Mastery

At 17th level, you choose four spells from the warlock spell list, one from each of the following levels: 6th, 7th, 8th, and 9th. You add them to your list of domain spells. Like your other domain spells, they are always prepared and count as cleric spells for you.