Attract/Repel

You invoke a displacement of gravity within 60 feet of you. You create a tiny orb of gravity that has an affected radius of 20 feet. When you cast this spell you specify whether or not you want the orb to attract or repel creatures. When a creature is inside the affected space or when they move into its space for the first time on their turn, they must make a Strength saving throw. On a failure, the creature is moved 15 feet away from the ball (if repelling) or 15 feet nearer to the ball (if attracting). While the spell is active, the affected area is considered to be difficult terrain when moving against the natural effect of the ball. For example, if the ball is repelling creatures, moving towards the ball is considered difficult terrain, but moving away from it is not.