Tenkai palm
The Tenkai palm is a card magic technique used to palm a card. It was invented by the Japanese magician Tenkai, whose real name was Teijiro Ishida (1 December 1889 – 6 June 1972). The Tenkai palm has many applications in card magic, as well as other manipulative magic with objects of a similar size, such as jumbo coins. Additionally, the Tenkai palm allows a great deal of freedom in the methods of concealing and revealing.