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?
You must discard a knight card you have already played. As a result, you may lose the Largest Army.
No, after the Oil Spring tiles have been placed on the hexes, these hexes only produce oil.
No, a player may build various metropolises. However, in a 3-4 player game only 4 Metropolis tokens are used for play. Once the supply is depleted, no more metropolises can be built.