Pinky Promise 1 and 2 by Shin Lim (Single Trick)
Two signed cards impossibly change places! Shin Lim's "go to" transposition effect!
Shin teaches you two versions of this stunning effect. One with your business cards and one with a deck of playing cards. 

While several effects are shown in the trailer, this particular download teaches you this one effect. Others are available for download as well.