Using bizarre phenomena to reveal the outcome of a magic effect is one of the most common presentations in magic. Almost every magician performs one reveal or another and almost no spectators are not surprised by it.

Although not a 'prediction' effect in the strictest sense, we usually refer to such effects as 'predictions'.

For example, the well-known Ashes On The Arm effect. A word or playing card the audience member is thinking of is revealed by smearing a small amount of ash across the magician's arm. Or the reveal using a lighter to bend a wire into the shape of the audience member's selected playing card.

There are countless ways to reveal a prediction, but revelations using water seem to be rarely seen.