Blood Hex

You place a curse upon a creature that you can see within range that binds to their blood, impeding their healing capabilities for the duration. Until the spell ends, the target cannot use their hit die, and cannot gain any temporary hit points. A remove curse cast on the target ends this spell early.

Additionally, if a target suffers from the lightly bleeding, moderately bleeding, or heavily bleeding effect, they take an additional damage die.

At Higher Levels. When you cast this spell using a spell slot of 3rd or 4th level, you can maintain your concentration on the spell for up to 8 hours. When you use a spell slot of 5th level or higher, you can maintain your concentration on the spell for up to 24 hours.