New card idea:
Royal Room
Cost 5, Action:
+1 action. Choose a card in your hand and play it. Then return it to your hand.
- Idea is that it's kind of like throne room since it can be used to play an action twice but it is much more powerful since it gives more flexibility with what to do with your next action (ie you can choose to play the same action again, or you can choose to play a different action). Also it interacts with itself better than throne room does. Since when you Royal Room a Royal Room you can choose the same action for each of your royal rooms.
But in play effects like those from bridge would not work for Royal Room.