Blood Sacrifice

Roll 1d4. A target that can be touched makes a constitution saving throw against your DC. A willing target automatically fails this saving throw. On a failed saving throw, the target loses hitpoints equal to the amount you rolled. On a successful saving throw the target is unaffected but aware a spell was cast on them.

You gain a superiority die that can be used to add to an attack, damage, save roll, or ability check of your choice. You can only have a number of these dice at a time equal to your spell casting modifier.

At Higher Levels: The dice used increases in size per spell slot used above the 2nd. (1d6 for a 3rd level slot, 1d8 for a 4th level slot, 1d10 for a 5th level slot, 1d12 for a 6th level slot, 1d20 for a 7th level slot).