Power Crystal

Power Crystal is a Rare item that appears on Bloons TD 7. It is acquired after finishing Round 100 on Hard or Impoppable, with a 20% chance. When equipped to a tower, any towers that are the same type of that tower, and their upgrades, cost 10% cheaper. Also, said tower will gain $50 every round! It is recommended to equip a Power Crystal to a Super Monkey, or any other expensive towers, because you can save your money without a Monkey Village!