Warlock: Orcus

Expanded Spell List:
Orcus 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.

Orcus (Fiend) Expanded Spells:
1st level: burning hands, command
2st level: blindness/deafness, scorching ray
3st level: fireball, stinking cloud, animate dead
4st level: fire shield, wall of fire
5st level: flame strike, hallow

Dark One’s Blessing:
Starting at 1st level, when you reduce a hostile creature to 0 hit points, you gain temporary hit points equal to your Charisma modifier + your warlock level (minimum of 1).

Dark One’s Own Luck:
Starting at 6th level, you can call on your patron to alter fate in your favor. When you make an ability check or a saving throw, you can use this feature to add a d10 to your roll. You can do so after seeing the initial roll but before any of the roll’s effects occur.

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

Semi-Master of Undeath:
When you casts animate dead or create undead, the creatures created by the spells remain under your control indefinitely. Additionally, you can cast create undead even when it isn't night. Also the animating of dead and creating of undead is no longer restricted to humanoids. Animate dead now may let the taget keep its power, but at the cost of using Spellslots which are in total equal, or over the CR of the target (at least 3).
Also Create Undead may let you summon a higher tier of undead, you will need to use spellslots whichs total is equal in level to the CR of the undead you try to summon (at least 6).
All undead above a CR of 5 will not act, without commands and are only able to follow (15 + Spellslot - 2 x CR of summoned Undead) commands (at least 1), after which they will get set to 0 hp.
(11th level)The Caster is also able to use Create Undead once per Long Rest.