Rewards Deck
History:
I found that in most games, players didn't ally with the Defense very often (usually only in the last rounds, to stop one player from winning). I wanted to increase the chances of a player getting "good" cards when receiving rewards. I also wanted to find a place to put all the unusual cards that were being added to my set. The result was a separate deck called the Rewards deck.
Parts:
A separate deck of card is required- with the backs being identical to the normal Challenge deck, but the face should have something to help players shuffle these cards out after the game is over.
Setup:
Place the Rewards deck to one side of the playing area.
Play:
During play, when a player has the option to receive rewards, they may choose draw from the Rewards deck (in addition to or in lieu of drawing from the normal Challenge deck, or taking tokens from the Warp/Praw).
The majority of cards in the Rewards deck should be considered relatively good.
Below are examples of cards that you can consider including:
Antibody Challenge Cards
Antibody Edicts
Defend Cards
Edicts (new ones)
Elementals
Kickers
Pulsar Cards
Quarks
Skew Cards
Special Attack Cards
Special Compromise Cards
Subterfuge
War Cards
Fantasy Flight Games released an expansion called Cosmic Incursion, which contains a new version called the Reward Deck.
This deck contains cards with different art on the backs, making for some unusual situations where you know someone is playing an encounter card from the Reward Deck, or allowing players to specifically target Reward cards with taking compensation. The Cosmic Incursion expansion contains:
* Kickers, which multiply your Attack card, your Compensation, or your opponent's ships lost in a failed deal
* Rifts, a mechanic that makes its official debut in this edition of CE
* Attack -01, -04, -07
* Negotiate (Crooked Deal), which grants +1 cards in Compensation or +1/-1 on ships lost due to failure to deal
* Another Cosmic Zap, another Card Zap, and new artifacts for the FFG version (Finder, Space Junk, and Hand Zap)
* Some new Reinforcements, up to a +6
* Another Morph
Expansion by Jack Reda  
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