Coin bite is one of the extremely effective trick done by David Blaine. A coin was bitten and a piece was removed. The missing piece of the coin was then restored after David Blaine seemingly spat out at it. The trick? Go to your nearest magic shop or suppliers to get this cleverly engineered coin. You could easily figure out how it was done and the only skill that you would need for coin bite is a bit of acting skill which every magician should have.