The Cosmic Deck (also simply called the deck) is the main deck of cards used in playing Cosmic Encounter. Players' hands are dealt from this deck. When effects let a player draw cards, the cards are drawn from this deck, unless otherwise specified.
Cards in the Cosmic Deck include:
- Encounter cards
- Reinforcement cards with values , , and
- Artifact cards
Flare cards dealt during setup are also mixed into the Cosmic Deck.