It is absolutely essential that there is always a playable action available. If not, it is considered a bug and requires the player to skip. In many modes, people may find they lack Energy normally required to play an action, these modes reserve slot 1 for Energy recovery actions.

Special Case: Energy Recovery (112)

It is absolutely essential that there is always a playable action available. If not, it is considered a bug and requires the player to skip. In many modes, people may find they lack Energy normally required to play an action, these modes reserve slot 1 for Energy recovery actions.