Here's what happens:
1. Show a few one-dollar bills.
2. Instantly turn them into A HEAPING PILE OF CASH.
Think about it.. if you REALLY had magic powers, this is the EXACT trick you'd be doing. Over, and over, and over again.
The reactions you're going to get with "Rainmaker" will SURPRISE YOU. Going from "a little" to "a lot" of ANYTHING is an awesome trick -- but when it's money.. it's pure FIREWORKS.
PROFESSIONALS: This is a BIG trick. Eye-popping big. And it's a worker too! But perhaps the best part, is that you're showing people what they secretly hope being a magician is all about. You're showing them exactly what they would do if they had your powers.
PS: My favorite way to perform Rainmaker is to give out a couple bills when I'm done. A dollar here and there is a small price to pay to convince crowds that you genuinely did produce money from thin air. Instead of "needing them back". If I can produce more, why do I care?