The Wall

If you're playing Bara and it's winter, would this remove the gold cost of playing Janos and Jon Snow from your hand?

Thats a good question, i hadnt thought of that one myself, but then the question to ask is it giving the affiliation to characters only in play or ones in hand as well, if it doesnt affect the cards in hand then I would say no it doesnt reduce the gold cost as you pay the cost first

The cards outside of play wouldn't have any active text, including their traits, so any out of house Night's Watch would have the penalty to play them.

Is it me or the text of DB is wrong? Shouldnt it be baratheon?

The site text is incorrect.

The cards outside of play wouldn't have any active text, including their traits, so any out of house Night's Watch would have the penalty to play them.

then how would the Gift reduce the cost of the next night's watch character you play?

I think he should have said "cards in your hand do not gain any text/abilities/affiliations from cards in play." They still have their text, it just can't be used unless specified by a card effect.

Are you sure? I didn't find anything on the rules about that..Otherwise I cannot understand why it is prized 1..

It's prized one because an ability that can potentially stand all your characters is pretty powerful.  And it's another prized card to help trigger the abilities on cards like the new Renly.  Baratheon.  Baratheon seems to have been shafted when it comes to prized cards (no surprises there.)  They seem to have cards that are supposed to contribute to a theme where no prized card is immensely powerful but they get advantages for having multiple prized cards. Whereas other houses get prized cards that are insanely good (like the new Dany)

So the prized on The Wall is less for itself and more for fuelling other cards.  At least that's my interpretation. 

Got it. I wasn't thinking of the other cards..

But the standing ability works even if it's not winter right?

Your cards in hand have exactly what is written on them, but cards in play cannot affect cards that are out of play unless otherwise specified.  Your in play Wall cannot affect Night's Watch cards in your hand.  When you go to play a Night's Watch character from your hand, it doesn't gain the Baratheon affiliation until after you've paid the costs to play it.

And luckily the standing works even when it's not winter

The Wall actually gives them the Baratheon Affiliation; the text in the database is wrong, but you can see on the card image that it has the Baratheon stag.

Give them renown via Wildling Bard?

To Be a Stag to stand a Night's Watch?

Equip them with Lightbringer to save them from being killed?

Boost them via Heart of the Stag or Deserted Castle?

Just a few examples.

I really like this version of The Wall, and I have had pretty good success with it too.

In the Marshalling example in the core rulebook it talks about how a card is played before the gold cost is met. "He chooses to play Eddard Stark (House Stark, cost 4), and moves 4 gold tokens from his gold pool, back into the treasury. Then, Darrell plays Jon Snow (neutral, cost 3), and moves 3 gold tokens from his gold pool, back into the treasury." If a card is played first and the gold cost is satisfied after, would you be able to play out of house Night's Watch characters without paying a gold penalty, assuming you're playing as Baratheon and its Winter? Is my interpretation of how cards are played correct?

Your interpretation of how cards are played is not correct. The cost is paid before the card is played/enters play. Check the FAQ, p. 18-19 for the order in which things are done when playing a card/initiating an effect. 

I'm pretty sure that the card isn't considered as being "played" until the gold cost has been paid, so the "If it is Winter..." effect of The Wall wouldn't come into effect until after the gold cost has been paid.

In the Marshalling example in the core rulebook it talks about how a card is played before the gold cost is met. "He chooses to play Eddard Stark (House Stark, cost 4), and moves 4 gold tokens from his gold pool, back into the treasury. Then, Darrell plays Jon Snow (neutral, cost 3), and moves 3 gold tokens from his gold pool, back into the treasury." If a card is played first and the gold cost is satisfied after, would you be able to play out of house Night's Watch characters without paying a gold penalty, assuming you're playing as Baratheon and its Winter? Is my interpretation of how cards are played correct?

Well... technically, The Wall's effect is continuous, not passive. So as soon as the Baratheon character is in play, it gains the power icon and the Night's Watch trait -- even before passives and responses to playing the character are initiated. It's the same reason Power of Blood (continuous) is always active before Valar (passive). The original post was questioning whether or not the card enters play before or after the cost is paid, which would affect whether the continuous effect was applied before or after the cost is paid.