Demonsmite

When you strike a creature with a melee weapon or unarmed strike, you can cast this spell to ravage them with Abyssal power. The attack deals an additional 2d6 acid damage plus 2d6 fire damage.

The target must additionally make a Wisdom saving throw as the influence of chaos attempts to infiltrate their mind. On a failed save they must use their movement and action to attack the nearest creature they can see on their next turn; if none are available, the creature is compelled to harm itself, though it makes a second saving throw at advantage. A creature will harm itself with its most conventional means, such as a dagger or cantrip, after which the spell ends on it.