There are nine different Bonus cards in the game and the number of available bonus cards available at play will be three more than the total player playing the game (say for instance for 4 players, there will be 7 bonus cards at play). Their main purpose is to have players earn additional income (which is always distributed during Phase I). Bonus cards (and their relevant bonuses) are valid for the round that you are holding them, and are returned at the end of each round.
Here are the 9 Different Bonus Cards in the game:
1. In Phase I “Income”, collect 1 additional Priest.
2. In Phase I “Income”, collect 1 additional Worker, and gain 3 additional Power.
3. In Phase I “Income”, collect 6 additional Coins.
4. In Phase I “Income”, gain 3 additional Power. Also, in Phase II and for this round only, your Shipping value is increased by 1. If you got this Bonus card in round 6, this increase will not count for the final scoring. (Dwarves and Fakirs do not gain any advantage from this card.)
5. In Phase I “Income”, collect 2 additional Coins. Also, in Phase II as a Special action, you may take 1 free Spade. You may acquire additional Spades by paying equivalent Workers if the cost is not sufficient to terraform the pertaining land you choose (Darklings pay 1 Priest per Spade).
6. In Phase I “Income”, collect 4 additional Coins. Also, in Phase II, you may take a Special action to advance 1 space on a Cult track of your choice for free.
7. In Phase I “Income”, collect 2 additional Coins. Also, when returning this card after passing, get 1 Victory point for each of your Dwellings currently at play.
8. In Phase I “Income”, collect 1 additional Worker. Also, when returning this card after passing, get 2 Victory points for each of your Trading houses currently at play.
9. In Phase I “Income”, collect 2 additional Workers. Also, when returning this card after passing, get 4 Victory points if you have already built your Stronghold and/or 4 Victory points if you have already built your Sanctuary.