Barring the gates : Card abilities cannot cause characters to enter play.
Heir to the iron throne : When Revealed: Search the top 10 cards of your deck for a Lord or Lady character and put it into play. Shuffle your deck. Then, sacrifice a Lord or Lady character.
Rules FAQ
If you do not find a Lord or Lady in the top 10 cards, the pre-then aspect of the effect did not resolve successfully and thus you cannot sacrifice a Lord or Lady. You can choose not to find a Lord or Lady despite there being a Lord or Lady in the top 10 cards.
If you find and put into play a duplicate of a Lord or Lady, the pre-then aspect of the effect did not resolve successfully and thus you cannot sacrifice a Lord or Lady.
Dans le cas où il y a barring en face et que l'on trouve un doublon, peut-on le jouer ?
Au niveau du timing pour poser un perso qui est déjà en jeu c'est :
1 Il est déjà en jeu, la carte arrive en tant que doublon et pas en tant que perso et on contourne barring.
2 Le perso doit arriver, on constate qu'il est déjà en jeu, le perso devrai devenir un doublon mais barring a dit non.