by a1bert
Would it be easier to simply make it cheaper to sweep the cards? Make it 1 energy instead of 2, and I guarantee the cards get sweeped much more often.(Or maybe you too haven't noticed that you can pay energy to discard the three cards and get new ones? If you have for example 9 energy, you can use 2 energy to sweep and the rest to buy any of the new cards, because I think 7 is the max cost. If cheaper cards turn up, you can even buy two.)