Most other games that have cards played here they issue them like GENOFLIGHT ( AUGMRNTORS) and CRYSTALIBUR (Beyond the Void). I think you can do that also at some point. But could be also useful to just grab few cards and make them playable in Age of Rust. I am sure you will get lots of suggestions of people holding those cards 
Here you can find all the blockchain cards: https://sogassets.com/ Each have some history. You dont need to pick many anyway. Try to give more rare higher value in Age of Rust.
This are some of most rare cards that are not unlocked and not already partnered with one other game. I would chose among them. But I actually suggest you to contact marketa or shaban and ask them to suggest which cards you should take and if they are willing to give you some of those unsold cards so you can give players in Age of Rust or sell them. This is best. Email them or PM user hnin here.
Here you can find all the blockchain cards: https://sogassets.com/ Each have some history. You dont need to pick many anyway. Try to give more rare higher value in Age of Rust.
This are some of most rare cards that are not unlocked and not already partnered with one other game. I would chose among them. But I actually suggest you to contact marketa or shaban and ask them to suggest which cards you should take and if they are willing to give you some of those unsold cards so you can give players in Age of Rust or sell them. This is best. Email them or PM user hnin here.
Thanks for the help and advice, I'll reach out to the folks you suggested and see what they have to say. Much appreciated!
