Black Hole

You create a howling black sphere centered on a point you can see within range. A creature who is completely within the sphere is blinded, and any movement away from the sphere is halved. Every creature and object except the caster who starts their turn within 30 ft of the sphere must make a Strength saving throw or be restrained. An affected creature is dragged 10 ft towards it every round. Each turn, they can repeat the saving throw. If a creature starts their turn in the sphere, they take 3d10 bludgeoning damage, which overcomes resistance to damage of that type, plus 1d10 necrotic damage.