Card Theme Ideas: Underground caverns with blind (secure) ant-like farmers farming and ant-like protectors guarding the vast underground vaults… Should have something signifying that we are not using blockchain technology. Perhaps broken chains hanging around the soldiers necks. A little bit of symbolism of casting the chains off…
I also think some symbolism should be in the flavor of the card that demonstrates Farming being positive and Mining being a thing of the past. Perhaps part of the chains being broken were from the past where the “ants” were forced to Mine and now they use those tunnel networks (a nod to mining) to Farm.
another edit: Not sure about the history of the world that the cards represent but a big part of maidsafe is people can store data in the vaults. Perhaps this is too much but I throw it out there anyway. The card flavor could show that people can bring valuables to the “ants” to store in their vaults for safe keeping. They had to fight to be free and now they will also fight to keep valuables for others free from thieves and such.
This gives me an idea to write a little allegorical fantasy short story as my own nod to SAFE