Collectible Cards
Some cards are collectible. Rather than appearing in shared pool each game, collectible cards only appear in a game if included in your captain’s 12-card deck.
Each captain has their own collection of collectible cards, which are unlocked as rewards as you play Galaxy.
Collectible cards may be distinguished from shared-pool cards by the subtle filigrees in their card frame and banner.
Sets
Each Galaxy set adds new collectible cards and captains, with their own themes and mechanics.
Captains unlock card rewards cards from their own set first, before collecting other sets’ cards at random.
Infinity Tokens
Infinity Tokens provide a way to unlock all cards for a captain forever - including new cards in future sets. They can only be used on "diamond" captains, with 50+ cards already collected (which unlocks the diamond captain frame cosmetic).
When selecting a captain before the start of the game, an Infinity Token may be used to "infinitize" it. Applying the Token adds an infinity symbol to the captain in the collection screen and in captain select.
Infinity Tokens are purchasable with gems. They may occassionally be obtained other ways, such as Galaxy Pass unlocks and event rewards.