Electromagnetic Ward

Arcs of electric current dance up and down your body for the duration, creating a magnetic field that grants you advantage on saving throws against being moved. You can end the spell early by using an action to dismiss it.

In addition, whenever a creature within 5 feet of you hits you with a melee attack, the shield leaps out at them. The attacker takes 1d10 lightning damage, and if it is Large or smaller, it must succeed on a Strength saving throw or be pushed up to 10 feet away from you and knocked prone.

You can use a bonus action on your turn to target one Large or smaller creature within 15 feet. The target must succeed on a Strength saving throw or be pulled 10 feet towards you.