Deep Darkness

When you cast Deep Darkness in a 20 x 20 foot area of your choice that you can see within range, a dark cloud envelopes any creature within the area. The creatures in the area are under full cover, and are blinded. The cloud is difficult terrain. You can use your action to move the cloud up to your walking speed. In addition, creatures cannot cast spells that require an S component. You can use a bonus action after you cast this spell to cause it to move and twist. If you do so, you may target a number of creatures equal to your spellcaster level divided by two (rounded down). The creatures are not affected by this spell. If the creatures are undead, they are immune to the effects of this spell. You can also target 1 creature in the cloud. That creature takes 2d8 necrotic damage. You can cast this spell using a higher spell slot and the damage increases by 1d8 per spell slot level.