Demonic Illusion: Heart of the Cards

Demonic Illusion: Heart of the Cards (魔幻・カードの心臓部; Magen: Kādo no shinzō-bu) is a uniquegenjutsu developed by Jushiro Kurama in order to enhance his own card manipulation.

Usage
During his time in the Hōzuki Castle, Jushiro was given a deck of cards to entertain himself throughout his life-sentence. Throughout his sentence, Jushiro became quite skilled in manipulating these cards; doing nifty tricks. Eventually Jushiro realized he could use these cards in battle, very similar to how a magician uses his own deck to entertain a crowd. But Shinobi are very skilled beings in which basic deception will usually not be enough. Because of this, Jushiro invented this basic genjutsu.

Using this technique, Jushiro is able to use illusions to deceive his opponents. Very similar to a magician, Jushiro will trick his opponents into believing what it is not there or vice versa. Many times when it appears he has a single card in his hand, he may have his entire deck. He can use this technique to force his opponent into believing that it is a card when its not. This works in Jushiro's benefit because each card bares a different effect so making it appear as if it were a different card would completely destroy their defense. The whole point of this technique is enhance his own card manipulation skills which grants him a wide range of tricks that have appeared to be troublesome.

Trivia

 * The phrase Heart of the Cards comes from the hit anime series.
 * The user made this technique aware that simple card tricks would not work against shinobi.