Dealing Age 3 - what to do with the two extra cards?
There are no extra cards in a correctly prepared deck.

The base game contains:


49 Age I cards
49 Age II cards
50 Age III cards


(There is one additional Age III card so that there are never all Guild cards in play.)

For a game with 5 players, you have 35 cards per Age:


Age I: 35 non-Guild cards
Age II: 35 non-Guild cards
Age III: 28 non-Guild cards, 7 Guild cards