a bug i see in this game, Mordor Assassin not work in site 5.
Replay:
http://www.gempukku.com/gemp-lotr/game.html?replayId=Kainbr$19ycukrofapdymml
Hmm, I'd need some of the rule gurus to take a look at this. In rules it says "Many assignment actions assign a minion to a companion. You cannot do this unless both of them are unassigned." Of course
Mordor Assassin clearly (by its game text) overrides the part where the Ring-bearer has to be unassigned, but I guess it does not override the requirement for itself to be unassigned.
While it was winning the skirmish (and overwhelmed the FP character), it is still considered assigned, as per rules: "A skirmish phase ends after all actions triggered by winning or losing that skirmish have resolved. At this point, characters who were involved in that skirmish are no longer assigned."
Therefore it seems to me the game has handled it correctly, by not allowing you to assign the
Mordor Assassin to the Ring-bearer, when the
Mordor Assassin itself was involved in the overwhelming skirmish, as it was not unassigned at that point.