One and a half Paladins

Otherworldly Patron

"Strange women lying in ponds distributing swords is no basis for a system of spellcasting"

Lady of the Lake

The lady of the Lake is a mystical being, appearing before beings considered 'worthy' in her eyes, who embody the chivalric values of their lands.  She is a being of otherworldly beauty and grace, and never appears to more than one individual at a time.  She is a gifter of might, of fortitude, of bravery and honour.  Often, she appears before knightly kings, offering her strength in the form of a golden sword and a sip from her chalice.  However, some scholars claim she is nothing more than a powerful enchantress, influencing entire kingdoms with her enchanting beauty and magic. 

Expanded spell list

The Lady of the Lake 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. 

Lady of the Lake Expanded Spells

Spell level Spells 1st heroism, shield 2nd branding smite, calm emotions 3rd crusader's mantle, elemental weapon 4th aura of purity, staggering smite 5th dispel evil and good, holy weapon

Questing Warrior

At 1st level, you acquire the training necessary to emulate ideal image of a warrior in the lady's eyes.  You gain proficiency with medium armor, shields, longswords, warhammers, greatswords and lances. 

Gift of the Lady

At 1st level, you can delve into reserves of might bestowed by your lady to overcome your enemies.  As a bonus action, or as a reaction when you become frightened, you become immune to the frightened condition for one minute.  Additionally, you gain temporary hit points equal to your warlock level + your charisma modifier.  Once you use this feature, you cannot do so again until after a short rest. 

Chivalric Armements

At 6th level, the lady's might clads you in a suit of glittering plate.  When you activate Gift of the Lady, your armour class cannot be lower than 17; but if you are using a shield, you can apply the shield's bonus as normal. 

Crusader's Will

At 10th level, you can activate Gift of the Lady whenever you fail a saving throw that causes you to be charmed, grappled, poisoned, prone, restrained or stunned.  When you do so, you automatically succeed the saving throw.  You can activate gift of the lady this way once, and regain the ability to do so after a long rest.  This feature acts as a seperate usage of Gift of the Lady. 

Chalice of the Grail

At 14th level, you have sipped from the Lady's Chalice, granting you saint-like might and vigour.  Your natural lifespan is doubled.  Additionally, while Gift of the Lady is active, you gain temporary hit points equal to half your warlock + your charisma modifier at the start of your turns. 

Eldritch invocations

Knightly Steed

Prerequisite:, Lady of the Lake patron, Pact of the Chain feature

The Lady grants you a steed from her own personal stables, as you learn the find steed spell. 

Caliburn

Prerequisites: Lady of the Lake patron, Pact of the Blade feature

You can create a weapon of gleaming radiance and royalty using your Pact of the Blade feature.  When you hit a creature with a critical hit, it is blinded until the end of its next turn.  You can choose to use your Charisma modifier for attack and damage rolls with this weapon. 

Grail Reliquae

Prerequisites: Lady of the Lake patron, Pact of the Tome feature

Your book of shadows contains countless tales of storied knights, detailing their valour and chivalry.  You have advantage whenever you roll to recall information on chivalric or knightly orders and their members.  You also have advantage on charisma (persuasion) checks interacting with creatures of a chivalric or Knightly disposition. 

Chalice-Bearer

Prerequisites: Lady of the Lake patron

The Lady has granted you an image of her own Chalice.  This cup can take any form you wish, and while you are in posession of it you are always under the effects of the detect poison and disease spell.  Additionally, you can cast the spell protection from poison once without expending a warlock spell slot.  You recover the ability to do so again after a long rest.