Dirge of Doom

You perform a haunting dirge infused with dreadful necromantic magic.  For the duration of the spell, creatures of your choice within the spells range take an additional 1d4 psychic damage whenever they take damage from a spell or attack.  In addition, affected creatures must make a Wisdom saving throw.  On a failed save, the creature suffers -1 to saving throws, attack rolls, armor class, and ability checks until the start of your next turn.

At the start of each of your turns, you may spend a bonus action to extend the duration of the spell another round.

At higher levels: When you cast this spell using a spell slot at 4th level or higher, increase the psychic damage by 1d4 and the penalty by -1 for each slot level above 3rd.