Tennis Shoes
These magic items subtly alter the path of projectiles, thus aiming them at the person wearing the Tennis Shoes. It won’t unnaturally curve the trajectory of a projectile, but ‘in the general direction of’ is usually good enough to ensure a hit. If somebody is actually aiming the projectile at someone, a hit is almost assured. The top velocity of the projectile must be no more than about one hundred miles an hour, which means that it works on baseballs — but not, say, arrows. Also, the projectiles generally aim for the center of mass; this is not a spell for headshots.