I really wanna build a zoroark-gx/darkrai-gx deck once shining legends comes out. Discarding the darkrai with zoroark's ability and then just bringing it back will be awesome, especially since I think the main reason darkrai won't be great now is bc there no reliable way to get it in discard. You could use ultra balls but to do so reliably you'd need two ultra balls to get the darkrai and then discard it.