Legendary Mods

Overview
A Legendary Modification is practically what makes any tower powerful permanently forever with a few disadvantages but those disadvantages can be rid off by paying the specific amount of price for the legendary mod. Legendary Mods are Mods applied to basic towers that use special prefix modifiers that cannot be obtained elsewhere. They cannot be scrapped. They will appear on screen when bought, and are marked with a star. Though unlike boosts, they are randomized and are never named. Legendary Mods can provide the same effects as boosts; a "Piercing Ninja Monkey"

Trivia

 * This is loosely based off Fallout 4: Legendary Weapon Effects