Whenever this tower attacks it has a 20% chance to launch a magical missile. Whenever a tower in 650 range casts a spell, the amount of missiles on attack is increased by 1 for a duration equal to the casting tower's ability's cooldown. The Spell Harvester can shoot up to 20 missiles per attack. Each missile deals 4000 spell damage. Each additional missile has 7.5% higher crit chance and 15% higher crit damage than the previous one.