4th-level evocation (sangromancy)
Casting Time: 1 action
Range: Self
Components: V, S, M (a dagger encrusted in jewels
worth at least 100 gp)
Duration: Instantaneous
As part of casting this spell you must expend four hit dice or the spell automatically fails. If you do, make a melee spell attack against a creature within 5 feet using the material component of this spell. On a hit, roll the hit dice expended casting this spell plus an additional 4d8 and deal necrotic damage equal to the result. If this damage causes the creature to be reduced to 0 hit points, it immediately dies and you gain one of the following dark blessings of your choice.
Unassailable. You have advantage on all saving throws.
Unbreakable. Your size increases by one category (from Medium to Large, for example), you gain a number of temporary hit points equal to your Constitution modifier (minimum 1) at the start of each of your turns, and your weapon attacks deal an additional 1d4 damage.
Unerring. Your proficiency bonus increases by 2. Your dark blessing ends after 10 minutes or when you are reduced to 0 hit points, whichever happens first.
When you take radiant damage while you have a dark blessing, you take an additional 1d4 damage.
At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the melee spell attack damage increases by 1d8 for each slot level above 4th.
Spell Lists. Warlock, Wizard