tohatenio said:

I feel that even though they are really op this game has gotten way more competitive lately having the stonehart units in the black market will make the game that much more fun if they can be bought in market with the red gems or Sapphs add them to market please 

Considering Stoneheart units were launched only recently, they may appear in Black market in future like rest of regular units.

I feel that even though they are really op this game has gotten way more competitive lately having the stonehart units in the black market will make the game that much more fun if they can be bought in market with the red gems or Sapphs add them to market please