SPS rewards will be given out in staked SPS
This concept was adopted by HIVE
SPS Staking is going to be critical in earning rewards so earning staked SPS will be a good start to prepare for that
SPS rewards will be gauged by how much SPS you have staked in the near-future

This is too arbitrary, having Sps in stake is going to have more value than the nft itself to get the rewards, it doesn't seem right, because the most important asset in the game are the cards, not the Sps.