"I LOVE this! You can't get a bigger impact from a completely borrowed deck! Deck can be completely and thoroughly shuffled by the spec before you begin. Just a slight bit of prep work is needed, which you can do in 5 seconds (stealthly). You can do the prep before the effect or find a way to distract for a few seconds (easily done). From that point, it's all extremely straight-forward. Even if you just did the "find" of the four cards you'd have a little miracle on your hands. The ace reveal is a little more tricky, but well within a beginner's skill level with a little practice. All in all, AWESOME."