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Question about The Cards Large Trade Ship, also compare: Trade ships - How does the Large Trade Ship combine with Hergild the Master Merchant?

Answer

The two don't combine at all. If you play Hergild the Master Merchant, the exchange rate for a resource you have a trade ship for increases. The Large Trade Ship isn't associated with any resource type and may not be used when Hergild is played.

Note: Hergild the Master Merchant belongs to the Age of Darkness expansion.