This is my version of the odd-backed ace assembly effect, in which I tried to make things appear as simple and magical as I could, to the eyes of a layman.

Four red-backed aces are dealt onto the table, and three blue-backed cards on each one. The three aces vanish one by one in a visual way, and after one last magical wave they are cleanly shown to have "fused" themselves into the blue backed indifferent cards of the initial "leader" pile.

The effect is not impromptu, it actually needs some preparation, but in the explanation video I show two different approaches you can use, one considerably simpler than the other (as far as the needed preparation goes), depending on your taste!

A few psychological/presentation points are also discussed, which help to make this effect as powerful as possible. Have a lot of odd-backed fun!