As two actions, a creature that you can touch or see within 20 meters has a lust for blood. The creature must make a Will saving throw.

On a failure, it is charmed by you for the duration. While charmed, its skin turns a deep red, and a thirst for destruction glows in its eyes. It must use its actions to make melee attacks made against a creature other than itself that you mentally choose. The charmed creature can move up to half its speed before making the attacks.

The creature can act normally on its turn if you choose no creature or if none are within its reach.

On your subsequent turns, you must use two actions to maintain control over the creature, or the spell ends.

The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Augment

Incite Passion. You can expend 1 additional mana so the charmed creature has disadvantage on Intelligence checks and cannot cast spells. If it is concentrating on a spell, it must immediately make a saving throw with disadvantage to maintain it.