SEA DOGS Q: Sea Dogs states “Name a faction. Move all other players‘ minions of that faction from one base to another.” How does this work? A: You choose a faction, then choose a base. Move all minions of that faction from that base to any one other base. This may target opposing players’ minions.
To be technical, you can pick any faction. However, you can only move other players minions. So if you were to pick 'Pirates' as the game stands now nothing would happen, because you control all the Pirates on the board. If a faction is released that allows one to take control of another players minions, and a player steals one of your minions, then you could name Pirates and move the minion stolen from you. It could come up.