A bit of history: The idea of the cards started when I saw how an AI could generate realistic photos of people. I tried to apply the same techniques to generating fantasy characters, and got amazing results.
The next 2 weeks were spent on designing the card assets, hero traits and descriptions. I borrowed some ideas from D&D (attribute points and alignment). Also threw in a random name generator, of which the names were scraped all over the internet.
Once I had the card assets, the rest all fell in place. It was obvious that the Ethereum blockchain was the best market place for such a collectible game. I spent the next 2 weeks writing the smart contract (based on ERC 721) and various pieces to support trading on the site. Fun fact: ETH price took off right before I was ready to deploy the contract on the mainnet. Due to high gas price, I had to spent a fortune… not fun!
Let me know if you have any comments/questions. And thanks for reading.