If the player succeeds on a DC 15 spellcasting check, A rain of arrows flies in the direction the caster is facing. Roll a d20 to determine the number of arrows. Each arrow does 1d4+1 piercing damage and 1d6 fire damage. If there are 7 or more, any creature of medium or smaller is knocked prone. If there are 11 or more, any creature of large or smaller is knocked prone. If there are 16 or more, any creature of huge or smaller is knocked prone. The piercing damage qualifies as a magical attack.