hexed rock
It can be tricky when you have playable decks you aren't willing to delete to make something you wanna mess around with you aren't sure will work. I was thinking a way around this can be to make deck slots to be able to be obtained with gems instead of real money. This gives f2p players a chance to expand what they can experiment with without having to delete their playable decks. 15 deck slots might seem like a lot but they get used up fast, especially as one's collection grows. 150 gems maybe a little more I think is reasonable for them and maybe consider removing the cap so players can have more then 30 decks if they'd like.
supple fossil