There are 6 factions of mercenary miners (Mercenaries) in the game. Each faction is represented by a different color and symbol. Each Mercenary has a level, indicated by a number from 1 to 4 on the card, and every Mercenary has a special skill, either an action or an in-game effect, that is described in detail in the text box at the bottom of the card.
The higher the level of a Mercenary, the better its skill.
 
     value of a card
 value of a card faction symbol
 faction symbol skill function
 skill function The skill works throughout the entire  turn of the player who played the card.
 The skill works throughout the entire  turn of the player who played the card. The skill works instantaneously
 and only once.
 The skill works instantaneously
 and only once. The skill works as an additional
 action of a given type, taken
 in the current turn.
 The skill works as an additional
 action of a given type, taken
 in the current turn.