Crimson Stakes

You summon four bone stakes caked in blood at targeted locations within range. Each stake is 10 feet tall and wide in a circular radius. Each creature that is within range of the stake must make a Dexterity saving throw, suffering 4d8 piercing damage, is pushed 10 feet back and is knocked prone. Succeeding the saving throw causes only half damage and the target is only pushed 5 feet back. A creature can only be hit by one stake at the time.