Referrer Giveaway (Patreon)

Hi guys, I'm thinking to make a "Referrer Giveaway" What do you need to do? Thats simple, you need to invite 4 or more people to join my patreon, tell them to send me a mp saiyan your username and that you referred him. When you'll get these 4 invited patrons you will get the successive rank without the need to pay more moneys. (For example. If you are pleding 3 dollars , you will get the 5 dollars reward , still paying 3 dollars)