Scenario: I played white raven first and then it was winter immediately without doubt. After a while, one of my opponents played black raven and he said it should be summer for everyone now. Question: isn't it i should be winter and he should be summer because i still had the black raven attached on my house card.

If my opponent was correct, then what if another opponent played white raven again, so we should be all in winter again?

Thank you for your kind help guys!

 Reread the White Raven and the Black Raven.  When you play them, you discard all other Raven attachments from play.  This includes any other White Raven or Black Raven.  There should only be one of White Raven and Black Raven in play at a time.

ktei2008 said:

This is one of the reasons why I advocate providing the card text. Sometimes certain obvious things are overlooked when we read the cards, and posting the text helps us re-read the card properly. Quite often, that might be exactly what we need to answer our own questions.

Hahaha, sorry guys, asked a stupid question. I thought I read the text as: when you play a raven card, discard the other raven cards attached to your house card (only).

Similar season-based question:

I marshal crown of winter onto a character; a round later an opponent marshals crown of mereen onto a character (there are no raven cards in any participating decks)

Is it now summer or winter or somehow both simultaneously? I'm inclined to say summer but the rules as they stand imply that it's both...

ktei2008 said:

No worries. It's most certainly not a stupid question, just an honest mistake. :)

Mylo said:

It's both simultaneously. I know this goes around real world understanding of the seasons, but in the game, both seasons can be active at the same time.

As far as I know the real world understanding of the seasons says that winter and summer have ALWAYS been simultaneous. Remember the south hemisphere? :P