Delvin's Invoked Orb

You create a floating, elemental orb within range that lasts for the duration or until you cast this spell again. You choose acid, cold, fire, lightning, poison, or thunder for the type of orb you create, and then make a ranged spell attack against a target that is within 5 feet of the orb. On a hit, the target takes damage of the chosen type equal to 1d8 + your spellcasting ability modifier.

As a bonus action on your turn, you can move the orb up to 20 feet and repeat the attack against a creature within 5 feet of it.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 for every two slot levels above 1st.