Return to its mat

In a cooperative game, only the player with units sharing a domain with an allied non-player hero's figure can use this hero's card (holding it in their hand). If this player no longer shares the domain, return the hero card next to its mat, unless this card has already been played this round (discarded next to the player mat). If the card has already been played this round, keep it next to the player mat and return the card next to its mat at the end of a round. This marks that each hero card can be played once per turn (you cannot keep taking the card into your hand by moving in and out of the shared domain). Lastly, note that the hero figure itself stays on the map until it is eliminated.