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I'd like to rent a lot of cards, but it's still kinda difficult. any plans to add a simple one-click solution? or even a pool?

I would like to do a one click option however there are some issues these days in that there are so many holes of non-available cards at many levels in the rental market... caused by way too many renters compared to cards available. So developing an automated system right now would be problematic because of those issues.

Renting cards on peakmonsters doesn't seem so hard if you choose your levels and sort by price. Also we have favorites option so you can choose your favorite monsters and then maybe sort by price and click click click on all the ones that are within your price range... which is the big issue we won't want to assume your price range automatically and prices vary wildly day by day (which is a cause of low liquidity of cards)