The Arcanist

Your patron is a great and powerful master of the arcane. Perhaps it's some ascended archmage or a lich, or maybe even a being of the Arcana domain. In any case, your patron offers you much in the ways of magic, both offensively and defensively.

Having such a connection to the arcane can impose certain behaviors. Many who form a bond with the Arcanist are swallowed by their growing lust for more and more magical power. Perhaps the power is worth it. Perhaps you can gain even further power by fulfilling the desires of your patron. Or perhaps, in the end, the path to true power is one's own destruction...

Blessings Arcana

Starting at 1st level your patron grants you additional access to magic. You gain proficiency in the Arcana skill, if you do not already have it. Also, you learn 1 additional cantrip and 1 additional 1st level spell from either the wizard or the sorcerer spell list. The chosen spells count as warlock spells for you but do not count against your number of spells known. Once you choose spells with this class feature, you cannot change the spells you have selected in this manner.

You can select 1 spell of 2nd level when you reach 3rd level in this class, 1 spell of 3rd level when you reach 5th level in this class, 1 spell of 4th level when you reach 7th level in this class, and 1 spell of 5th level when you reach 9th level in this class.

Magical Reinforcement

You have a number of reinforcement dice (1d4) equal to your proficiency bonus. As a reaction, when you would be hit by an attack roll or forced to make a saving throw by a spell or spell like effect, you can expend 1 of these dice and add the number rolled to either your armor class (if you are hit by an attack roll) or to your saving throw (if forced to make one). If you used your reinforcement die to add to your armor class the bonus to your armor class lasts until the start of your next turn. You regain all expended uses upon completion of a long rest.

At 6th level the reinforcement dice become d6. At 10th level the reinforcement dice become d8. At 14th level the reinforcement dice become d10.

Arcane Flurry

Beginning at 6th level you have gained enough favor with your patron to operate outside the typical boundaries of magic. When you cast a cantrip as your action, you may cast a different cantrip as a bonus action, even if the cantrip requires an action to cast. You may do this a number of times equal to your proficiency bonus per long rest.

Imparted Knowledge

At 10th level your patron imparts a fragment of knowledge to you. You gain expertise in Arcana and 1 other skill of your choice. You also have advantage on all spell attack rolls as long as nothing is giving you disadvantage on spell attack rolls.

Eldritch Influx

At 14th level your patron grants you a small taste of greater power. Your number of attunement slots for magical items increases to 4. Your charisma score increases by 2, and your charisma score maximum increases to 22.