Six cards are shown of the same color front and back.
Once you perform the salute the cards are counted and a card appears (lets say a ten)
You still have the six original cards, yet when you perform the salute you count the cards and another (10) appears face up among the clearly shown six original face down cards.
You perform the magic salute twice more and a ten appears face up between the six original face down cards.
You now have four tens and the original six cards.
As a final kicker you turn over the cards that appeared and each one has a uniquely different back.
Strong multi phase killer effect with a small packet of cards.