The Demon Prince

A pact with a Demon prince is both rewarding and dangerous to the mortal seeking power

Expanded Spell List

1st- Bane, Hideous Laughter

2nd- Detect Thoughts, See Invisibility

3rd- Bestow Curse, Slow

4th- Confusion, Resilient Sphere

5th- Dominate Person, Contagion

A gift of Power

At 1st level. Your patron has bestowed upon you a mighty shadowy boon.

Curses-1 per short rest- As a bonus action chose a curse and curse your target. 

Curse of shadows-CON save or gain vulnerability to necrotic or remove resistance for 1 min but can repeat the save at the end of each turn

Curse of recklessness-WIS save or the target has advantage on all attacks but its AC is reduced by an amount equal to your proficiency but can repeat the save at the end of each turn

Curse of necrosis-DEX save or the target suffers 1d4 necrotic damage for 1 minute but can repeat the save at the end of each turn (scales at 5th 2d4, at 11th 3d4, at 17th 4d4)

Curse of weakness-STR save or physical attacks do half damage for 1 minute but can repeat the save at the end of each turn

Curse of tongues-INT save or all spells with cast time of one bonus action are now worth an action to cast and all spells with a cast time of one action are now worth an action + a bonus action for 1 minute but can repeat the save at the end of each turn

Curse of exhaustion-CHA save or have the target speed be reduced by half rounded down for 1 minute but can repeat the save at the end of each turn

 

Price of Power

At 6th level the warlock gains new dangerous powers

Life tap- sacrifice part of your life force to return all your spell slots taking half your level in this class d10s of necrotic damage that can't be negated in any way and you can be killed by this damage. If you die your soul is forfeit and the demon prince owns it. The only way to resurrect is by a wish spell or someone making a deal with the demon prince. Can be used once a day

Drain Life-Concentration- as an action attempt to drain a target in 60ft range life force to heal yourself. Make a rage spell attack on a hit the target takes 1d6 necrotic damage increases to 2d6 at 11 level and to 3d6 at 17 level. This effect latches on to the target and on each turn for the next minute as a bonus action you can force the target to make a CON save and on a fail syphon health from the target which takes 1d4 necrotic damage and you are healed for half as much increases to 2d4 at 11 level and to 3d4 at 17 level. 

Soul stone

At 10th level the warlock is shown the secrets of wielding and taking souls

Curses increase to 2 per short rest

Soul stone- a humanoid that is killed by drain life or dies while cursed can be trapped in a soul stone. You can have up to your proficiency number of soul stone. The soul stone is a torture dimension and can extract the secrets of a soul given enough time. A soul can be consumed by the warlock to grant a benefit lasting for 10 minutes.

Empower curses- cost 1 soul-disadvantage on the first save against the next curse you cast

Multitude- a soul can be sacrificed to cast an additional curse above the maximum

Soul eater- a soul can be consumed to heal for 1d4 increases to 2d4 at 11 level and 3d4 at 17 level

Soul shatter - Shatter a soul dealing 2d6 necrotic damage to all creatures around you in a 30ft radius. You can shatter multiple souls at the same time

 

Absolute power

At 14th level the warlock gains deeper understanding of soul magic

Absolute power: once a day you can use Soul tap or Drain Soul

-Soul tap- once a day when you use life tap you can attempt to drain life all creatures in a 60ft radius. Make roll for each target and for each target hit by drain life reduce Life tap damage by 1d4 and for each miss increase the damage of Life tap by 1d4. All the drain life spells count as a single concentration.

-Drain Soul - As an action once a day chose a target affected by your drain life spell and attempt to shear the soul from it's body. The target must make a WIS save or take it's level worth of d4 necrotic damage. Then the spell continues as the normal Drain life.

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Curses increase to 3

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Black soul stone- the creativity for soul usage are endless.

You can now sacrifice a soul to gain advantage on concentration.

You can sacrifice soul to gain advantage on a spell attack

You can sacrifice a soul to gain advantage on a save