The Raven Queen

The Raven Queen’s followers are expected to serve her will in the world. She concerns herself with ensuring that those fated to die pass from the world as expected, and bids her agents to defeat those who seek to cheat death through undeath or other imitations of immortality. She hates intelligent undead and expects her followers to strike them down, whereas mindless undead such as skeletons and zombies are little more than stumbling automatons in her eyes.

Sentinel of the Raven Queen

The Raven Queen has beholden to you immense power. When in danger you can put the terror of the Raven Queen’s influence into your enemy. You can use an action to release a wave of terrible cold in a 10 foot square cube. Everyone in the cube must make a constitution saving throw against your spell dc or they take 2d6 Cold damage. Once you use this ability you can’t use it again until you finish a short rest.

Watchful Eyes of the Queen 

you gain the service of a spirit sent by the Raven Queen to watch over you. The spirit assumes the form and game statistics of a raven, and it always obeys your commands, which you can give telepathically while it is within 100 feet of you. The raven is a specter and loyal only to you. It doesn't require food, water, or sleep. 

You can see through the raven’s eyes and hear what it hears while it is within 100 feet of you. This can be used a number of times equal to half of your charisma modifier. Once you have used up your available uses, you must take a short rest before using it again.

In combat, you roll initiative for the raven and control how it acts. If it is slain in combat, you can summon it back with a 1 hour ritual. Once the ritual is complete you combine 10gp worth of incense, 1 cup of your blood, and flame of magical properties to ignite it. The flame burns hot at first, but soon turns blue and colder than the highest peaked mountain in winter. Within a few moments the raven springs forth from the flame to join you once again 

The Raven’s Blessing

At 6th level, You obtain the Raven Queen's benevolent favor. The Raven Queen protects her Warlocks desperately so they may do her bidding so long as they are useful to her cause. When one of her Warlock's are damaged during combat they can use their reaction to stare into the enemies eyes and let them see their impending demise. The damage you deal is 1d6 Psychic. This damage grows with you. This can be used 3 times per long rest.

At 10th level it becomes 2d6, and 14th level, 3d6, and at 17th level, 4d6

Shadowfell’s Curse

At 10th level, your prestige and renown with the Mistress of Death is so great that she grants you near immunity from death. You now have advantage on death saving throws, Immunity to being frightened, and resistance to necrotic damage. In return, you are cursed with searing images of undead near you. This ability let’s you sense any and all undead within 250 feet of you. You know a general direction (North, South, East, or West) You do not know where they are, only that they are near you. These images will not cease until you find them and exterminate them or until you leave the range. These images do not impair you, not do they stop you from thinking. However, if you stay within range of the same undead, you will get a migraine. This makes it hard for you to focus, and gives you disadvantage on perception checks until the undead is either killed or until you leave the range.

The Raven’s Reaper

Raven Queen's Curse

You no longer age and you have become immortal. You can still die, the Raven Queen does not allow anyone to escape death, but you have become invaluable. Your efforts are needed, and should you escape death longer than she wants, she will reap you herself.

 

Benevolence of the Queen of the Shadowfell

Also at 14th level, Your Eldritch Blast can change damage types. Whenever you attack a creature that is undead, you deal radiant damage. At any other time, it is now cold damage. The damage die for Eldritch Blast also increases to 1d12 for each beam and you can add half your proficiency bonus to the damage should it hit.

you will have the ability to rise the chances of you rolling a critical hit. When you roll a 18, 19, or 20, it is considered a critical hit. If you roll a critical you also ignore all resistances and immunities to this damage type.