Blood Javelin

You summon necromantic power that feeds on your own lifeforce, dealing 2d8 necrotic damage to you. This lifeforce coalesces into a shaft of blood, which unerringly strikes your target for 3x's the blood cost  (self damage) + your spellcasting modifier as force damage. Once struck, target must make a dexterity saving throw. If target fails its dexterity save, blood from the javelin runs to the ground and holds them in place, causing the Restrained condition for 3 of its turns. If it succeeds it's saving throw, it is not Restrained. After casting Blood Javelin, make a Constitution check, DC 10. If you fail this check, you take one level of Exhaustion.

At Higher Levels:  Blood Javelin scales when cast at spell level 6 and 9. At each additional Scaling level, Blood Javelin costs an additional 2d8 lifeforce (self damage). Damage to target remains at 3x lifeforce cost + your spellcasting modifier. Furthermore, for each scaling level, you summon an additional Blood Javelin that may attack an additional target. Max 3. You may select the same target for multiple Blood Javelin attacks, though its Restrained condition, if applied, is capped at 3 turns.

"Yessss, yesss! Use blood to take blood! Sacrifice must be made to Horned Rat, and he, he gives to his most devoted servants." ~ Skaven Chief Warlock Ikit Claw of Clan Skryre