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Question about The Helpers of Catan When using Vincent, do I have to discard a Knight card I already have played or a Knight card from my hand?

Answer

You may choose whether to discard a Knight card from your hand or a Knight card you have already played. If you discard a Knight card from your hand, you can't chase away the robber, and if you discard a Knight card you have already played, you might lose the Largest Army.