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I haven't had to shuffle a redemption deck in a while, but I'd likely use the standard bridge methods.... just with a LOT less bending. You can also try farrow shuffling the cards, especially if they're in sleeves.https://www.youtube.com/watch?v=btt0BUfvh3YBetween shuffles, do a couple cuts to mix the deck up a bit:https://www.youtube.com/watch?v=uDsIGFM05-0I typically use the method at 5 minutes. It's quick, easy, and doing it a couple times in a row helps mix up a deck, while keeping the cards all facing the same direction (the second cut he shows will NOT keep your cards in the same direction).I suggest you practice any new method of shuffling on a standard deck of playing cards, not your valuable redemption cards.
If useing sleeves do the Faro shuffle from the side not the ends. Form the ends creates a mixed up deck and can damage sleeves. I suggest a riffle shuffle from the side with sleeves. Shuffling redemption cards without sleeves is niegh impossible unless all cards are from Angelwars down.