Create Smoke Guardian

You twist smoke to create a deadly guardian at a point you can see within 120 feet of you, the point must be on solid ground. You determine the appearance of the guardian. The Guardian is intangible and is immune to all damage and conditions

As long as the guardian exists you know the location of all creatures it can see. The guardian has hearing and darkvision up to 120 feet

As a bonus action you can command the Guardian to attack a creature within 30 feet of it, that creature must succeed on a Constitution saving throw or take 3d6 Necrotic damage.