Minecraft wiki entry for Fireball, associated text: At close range, it is one of the most powerful mob attacks in Minecraft; a direct hit deals 6 projectile damage from the impact, and up to 9, 17 × 8.5, or 25 × 12.5 explosion damage from the blast, depending on difficulty. A fireball deals 1000 × 500 damage to a ghast if the fireball was rebounded by a player.[verify]