User blog comment:Bloonpopper/Level 6 upgrades/@comment-3055903-20101016180454

Upgrade for Monkey Apprentice: Hurricane. Cost is as much as a Rigel God. The Apprentice, now a necromancer, uses hurricanes, which pop 2 layers of bloon. A Hurricane is also as big as a M.O.A.B. Hurricanes each deal 3 damage to M.O.A.Bs and other blimps.