Doppelte Verwandlung by Jochen Zmeck

Handbuch der Magie (German book) by Jochen Zmeck
Page 47 et seq.

Personal Comment: Really cute trick. While this might not end up in a professional's act I can see this one done at a bar among bar bets and such things. Easy to do, no setup (well openly taking out the Jacks) and a visual effect. Cool stuff. If part of a longer routine this might be worth checking out.

Difficulty 2/5