You will want to watch the last 5 minutes of John Carey's Stealth Aces video a couple of times.
Through simple misdirection and without difficult moves, you can create a pile of Aces from a freely
borrowed deck and after a spectator freely shuffles a dozen cards chosen from the deck. It really
works. I learned a long time ago that the best magic is simple with the quality of the effect
dependent on the patter and presentation. Stealth Aces clearly falls in this category. It is easy
to pickup and can be done impromptu with any un-gaffed deck.