If an effect would require a Unit be played to a Battlefield with a Staged Combat or a Combat in Progress, where the controller of the played unit is not a participant, instead the Unit is played to its controller's Base.
§ 462.2.a Core Rules PDF (officieel)
§ 462 Combat can only occur between Units controlled by exactly two players.
§ 462.2 In Modes of Play with more than two players, Battlefields with Staged Combats or Combats in Progress are Invalid to be chosen as a location to play one or more Units by a player not involved in that Combat by any means.
