I have a couple alt accounts in splinterlands that only have level 1 cards in them so I don't really play with them. If anyone would like to use them for free they can message me on discord mannaman#0457 and I will give them a key. You can keep all of the daily quest cards and 100% of tournament earnings. I will just keep the season rewards. The DEC generated wouldn't amount to much at all so there doesn't seem much point in splitting it. If you manage to fill the account with a significant amount that makes it worth the time of manually splitting it then you can have 75%.
If you are a committed player then I might upgrade a few cards all without you having to pay anything.