6/6 elite wild cards

What’s happens if you purchase an elite wild card from the shop when you have 6/6 already?

I’ve been saving them to see what happens to the knight. Doesn’t seem like they are doing much to nerf him even though he appears in 120 plus decks every season. Even the oct balance change isn’t enough in my opinion.

Hello, please see here: Card Evolution - Clash Royale 2023 Q2 Summer Update | Blog - RoyaleAPI.