Ive read all the post and the closest I see is Here then There but:
I dont think this is the one. The white hair fellow aka: Italian Stalion he says he is. Blaine gets him to sandwich a known card. Blaine rubs another card face down on the old guys sandwiched card hand and the card sandwiched changes into another card.
Please forgive me if any redundancy. Please, gotta know the name of this one though!
it a two card monte
Its not the two card monte. The Two-Card Monte (Be Honest, What is It by Eddie Fechter) is the effect where two kings change into two red aces in the spectator's hands.
This IS Here Then There. The name "Here Then There" was coined in the Card College series.
Two dupes and knowledge of a basic card sleight is all you need to know.