Happy Holidays @jedha!!!
Welcome to the community. Card placement and deck building are a very challenging yet rewarding aspect of Splinterlands. Love it myself.
In regards to the Chaos Dragon, unfortunately, you don't qualify per my rules listed above.
In looking at your comment history it shows this is your first comment. I want to be as fair as possible to those that have been active on the website and incentivise those that are new to get involved here. It will only benefit you anyway. However, stick around because I have something up my sleeve. 🤫
Cheers!