A few days ago I released a site to help you find cards with many filter parameters, if you haven't seen it yet, check it out at Monster Finder
In this new release I've added the possibility to rent cards directly on the site and a new filter parameter to show the chepeast card per level.
For now you're required to login/rent using Hive Keychan. I'll try to add HiveSigner as alternative later.
For renting I had to study how the Hive universe works and I really enjoyed it. I started playing because I like Magic and this was a play to earn game, ignoring the Hive system. So if you are just playing Splinterlands like I was, you should also stop to learn a little about Hive.
Now that I've implemented this, I want to try to make an alternative interface for battles, I wonder how hard it is.
Hope you find these new features useful, and if have any suggestions, leave on the comments.