The cards of Clint City are divided into different rarities. This gives a rough classification to how easy it is to obtain a character, how much it may cost, and how useful/powerful it may be ingame.
There are currently five rarities:
- Common cards are the easiest cards to obtain in a pack, and four or five of them appear in a full deck bought from the shop. They are identified by their bronze-red edges.
- Uncommon cards are the second easiest cards to get, with two or three of them appearing in each purchased full deck. They are identified by their silver edges.
- Rare cards are the hardest regular cards to get, with only one appearing in each purchased full deck. They are identified by their gold edges.
- Collector cards are the hardest cards to get in the game, since they are not found in any shop-bought full deck pack. They are identified by the cards themselves being gold or amber all over the background and a "Cr" tag after their names. On occasions, the UR staff make an announcement which card(s) will go Collector via the game news.
- Legendary cards are just as hard to get in that they that can only be obtained by completing time-limited missions that appear regularly. They are identified by their purple edges and an "Ld" tag after their names. Each player can have at most one copy of each of these cards, and the cards themselves cannot be traded or sold.
There were also previously two rarities:
- Rebirth cards did not represent any rarity per se, but were rather cards based on older pre-existing ones, with new artwork and the "Rb" tag in each of their names. Apart from these differences, they were identical to their original counterparts. This card type was retired on December 2016.
- Mythic cards were the hardest cards to get in the game, and in fact even rarer than Collector cards. The color of these cards was blue or emerald all over the background, complete with the "Mt" tag in each of their names. When played in a battle, a different background image and/or a special visual effect would play. This card type was retired on March 2024.