Plasma gun

The plasma gun is a item. When you equip it in a tower, it will shoot a additional line of 2/0 super monkey plasma. When you pop a plasma bloon, it have 2,1% chance of droping one of them. Also, you can use this item unlimited times. Overpower, but needs energy to recharge. When you gain the item, it will have 0/5.000 volts. For this, you need something that generates energy (electric towers, something how this). Each shot requires 5 volts.