The All-Knowing

Warlock of the All-Knowing initially started as "what would a corrupted wizard look like? What if they made a deal for power instead of studying for years on end?"

 

Those discussions grew as did the idea of the power of knowledge. Knowledge can be equipped for good purposes as well as nefarious ones. When people say knowledge is power, they aren't kidding and these spellcasters wield knowledge in the same of a patron who wishes to invoke such power.

Expanded Spell List

The All-Knowing lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

All-Knowing Expanded Spells

Spell Level	Spells
1st	Dissonant Whispers, Command
2nd	Detect Thoughts, Locate Object
3rd	Clairvoyance, Speak with Dead
4th	Phantasmal Killer, Confusion
5th	Modify Memory, Legend Lore

Learned Servant

You can choose to cast your warlock spells with either Intelligence or Charisma. Additionally, you gain expertise in Arcana and History and know 2 additional languages.

Mind of a Fortress

You gain resistance to psychic damage.

Additionally, your eldritch blasts can now deal psychic damage (switching the damage type is at no cost to you.) If you hit a creature with an eldritch blast that deals psychic damage, you can spend a bonus action to learn if that creature has any damage or condition resistances and immunities. You can only learn this information about 1 creature per turn.

Seer of Souls

You gain proficiency in INT saving throws and learn one additional language.

You are also adept in sneakily spying to gain knowledge. Once a week, you can cast Scrying on a cretaure you have at least heard of. You do not need material components for this spell.

Intellect Siphon

As an action, you can target one creature’s mind within 60 feet and attempt to steal their own intelligence for your own gain. The creature must make an Intelligence saving throw or take 6d6 psychic damage and have their intelligence score reduced by 4 until they take a long rest. If they succeed, they take half damage and their intelligence score is not reduced. If they fail, your intelligence score increases by 4 until you take a long rest.

Once you have used this feature, you cannot use it until you take a long rest.