Death Knight - Stage 4 (Reaper)

Boons:

• Reaper: You have become the champion of death incarnate, and have gained the ability to syphon the very energy that suffuses your enemies. As an action, any creature within 40 feet of you loses all SD they currently have. You regain a number of hit points equal to 1d8 for each SD you have syphoned.
  
  In addition, if you syphon 12 or more SD, you become an incarnate of Death for 1 minute, gaining the following benefits:
  • Your form shifts and grows an armor of bones, your size increasing by one category, and your reach with melee weapons increasing by 5 feet.
  • You sprout skeletal wings and gain a flying speed equal to your walking speed.
  • You gain resistance to all damage
  • You deal an additional 2d8 necrotic damage with your Death Knight Weapon.
  • Consumption of the Damned. As a reaction upon killing a living creature with your Death Knight weapon, you can pull the creature's soul into yourself, gaining the ability to cast the finger of death spell once, as a bonus action.
  
  Once you transform from this feature, you cannot use this action again until you finish a long rest. Additionally, you lose all obtained SD upon completing a long rest. 

Flaw:

• Forsaken: The burden of your soul being outside your body has grown exponentially. If your Anchor is more than 5ft away from you for longer than 1 minute, you gain one level of exhaustion that cannot be lost until you reclaim it. For every day you are without your Anchor, you gain an additional level of exhaustion.
  
  In addition, the extra damage you take from you Existence of Death flaw has increased to 1d8 per transformation level. You also have disadvantage against saving throws against celestials and divine blessed Humanoids.