Undead

Beings of this type include the demilich Acererak, the vampire tyrant Kas the Bloody-Handed, the githyanki lich-queen Vlaakith, the dracolich Dragotha, the undead pharaoh Ankhtepot, and the elusive Darklord, Azalin Rex.

Form of Dread

• You gain temporary hit points equal to 1d10 + your warlock level.
• Once during each of your turns, when you hit a creature with an attack roll, you can force it to make a Wisdom saving throw, and if the saving throw fails, the target is frightened of you until the end of your next turn.
• You are immune to the frightened condition.

You can transform a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.

The appearance of your Form of Dread reflects some aspect of your patron. For example, your form could be a shroud of shadows forming the crown and robes of your lich patron, or your body might glow with glyphs from ancient funerary rites and be surrounded by desert winds, suggesting your mummy patron.

Grave Touched

Your patron's powers have a profound effect on your body and magic. You don't need to eat, drink, or breathe.

In addition, once during each of your turns, when you hit a creature with an attack roll and roll damage against the creature, you can replace the damage type with necrotic damage. While you are using your Form of Dread, you can roll one additional damage die when determining the necrotic damage the target takes.

rest.

Fiendish Resilience

Starting at 10th level, you can choose one damage type when you finish a short or long rest. You gain resistance to that damage type until you choose a different one with this feature. Damage from magical weapons or silver weapons ignores this resistance.

Hurl Through Hell

Starting at 14th level, when you hit a creature with an attack, you can use this feature to instantly transport the target through the lower planes. The creature disappears and hurtles through a nightmare landscape.

At the end of your next turn, the target returns to the space it previously occupied, or the nearest unoccupied space. If the target is not a fiend, it takes 10d10 psychic damage as it reels from its horrific experience.

Once you use this feature, you can’t use it again until you finish a long rest.