Earthen disk

A disk or star of rock fires toward a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 1d8 bludgeoning damage.The creature is mildly knocked off balance by the attack,and opportunity attack are made at advantage against them until the end of your next turn.

The spell creates more than one disk when you reach higher levels: two disks at 5th level, three disks at 11th level, and four disks at 17th level. You can direct the disks at the same target or at different ones. Make a separate attack roll for each disk.