Evoker's Mark

You mark a creature that you can see within range. Until the spell ends, you deal an extra 1d6 Cold, Fire, Lightning, Acid, or Thunder damage to the target whenever you hit it with an attack. Also, you can use a bonus action on your turn to change the damage type.

If the target drops to 0 hit points before this spell ends, you can use a bonus action on a subsequent turn of yours to mark a new creature.

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.