I have not tried the new survival game mode yet, but with mostly base cards, probably it would be quickly goodbye to my entire Splinterlands card collection for the current season.

I sold almost all of my Beta Splinterlands cards years ago.

Splinterlands was one of my favorite games in/around 2019, but it changed a lot (became worse and worse) in the previous few years that nowadays I very rarely play it.

I still try it from time to time to see whether anything in the game became better, or not.

Good luck and have fun.