Turner's Spear of Ice

You hurl a spear made of ice at a target within range. Make a ranged spell attack to hit. If the attack hits the target takes 2d6 cold damage and is pushed 10 ft. back. If this movement would cause the target to impact with a wall they are pinned by the spear and considered grappled until the end of your next turn or until they break loose from the grapple (making a check against your spell save dc). Huge or larger targets are immune to this pin.