让观众在众多动物卡片里随便选择一张，

不要给魔术师看，

然后魔术师拿出一个信封，

这个信封是个预言信封，

轻轻摇动信封，

里面会传出一种动物的声音，

而这个声音正和观众选择那张牌相对应。

此魔术来源于日本。

https://v.youku.com/v_show/id_XMTU4ODQ5NzA4OA==.html?spm=a2h0k.11417342.soresults.dtitle

Singular Sound Card

Classic Magic technology products.

Magic results:

Audience in many animals choose a random card in, do not look to the magician and the magician took out an envelope, this envelope is a prediction envelope, gently shake the envelope, which will be heard the voice of an animal, and this voice positive and the audience chooses the card corresponds.

DEMO: https://youtu.be/nfZuy82KyGM