We present to you the new Breaststroke Prediction by Javier Santos, surprise your spectators with this super visual, mystical and fun magic effect

Easy to use and practical, use the pen device with transparent green liquid, draw on a napkin, kitchen towel or tissue paper, any figure, numbers, letters, cards or whatever you imagine, then when it dries completely and becomes invisible, it will be ready to be revealed at any time and place

This effect can be used for stage magic, close-up magic, mentalism, children's magic, predictions and much more.