So I was on my 2nd attempt at the non-perishable challenge and came across this synergistic combination. I used the investment tag in Ante 1 for early econ, and then, in Ante 2, came across a holographic Four Fingers, then a Seance, then a holographic Shortcut and a smeared joker next to each other. Unfortunately, I didn't know about the last two jokers and skipped Seance, but it was back around Ante 4 or so. The jokers other than Seance make it really easy to get straight flushes, and so Seance makes it super easy to rack up tons of spectral cards.