If first and last scoring cards are Mult Cards, enhance all scoring cards to Mult Cards
To go with my previous Mult Card-related suggestion (#1407179215492747427), I figured a Joker that converts cards to Mult Cards would be neat, and this is what I ended up with. I think this is balanced for an Uncommon if you compare it to Midas Mask, which doesn't require already having scoring cards of the enhancement, but in turn only works on face cards. However, if it seems too strong for an Uncommon, I could make it a Rare Joker. I considered making it convert non-scoring cards as well, but then it just ends up feeling like Pair spam, so I made it work on scoring cards only to incentivize 5-card hand types.
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