Each player selects which Units from their hand they want to put into play in their Kingdom.
Players simultaneously place the Units that they want to put into play, face down on available spots in their Kingdom.
If players lack space in their Kingdom, they can freely discard Units already in play or move them from one spot to another.
When all players are done playing, they simultaneously reveal the Units that they just played, and pay their cost in Gold.
A Unit that has been brought into play during a previous turn never has to be repaid for.