Tattoo artist Scott Campbell offered strangers free tattoos through a ‘hole in the wall’ system at Milk Gallery at Manhattan, New York.

25 people were chosen based on lottery to get one free tattoo. The only condition was to trust the artist on the tattoo since they were completely in the dark as to what tattoo they would get on their forearm.

Campbell is a renowned tattooist and has worked on the skin of Marc Jacobs, Penelope Cruz, Orlando Bloom and other famous people.

“I think there is a bit of magic there in the exchange, the drawing-a-card-out-of-the-deck dynamic,” Campbell told the New York Times of the experience.

“As a tattoo artist, you never have absolute freedom in what you create. Your canvas always has an opinion on what is going on them, which is great because sometimes you get inspired by the person, and the piece becomes a reaction to them.”