Rarity is one of the factors of a card.
There are six rarities in the game.
In your deckbuilder, you can easily determine the rarity of a card by the little letter in the bottom right. That letter represents the first letter of its Rarity. As such, "C" would mean it is Common, "U," Uncommon, etc. You can also determine it by the number of them you are allowed to run in your deck.
However, you can still determine the rarity of a card while in a battle - if you look closely at the area just below a card's name, there's a tiiiiny stripe of colour there. That stripe of colour denotes the card's Rarity.
A card's rarity determines:
- How many copies of that card can be put in a deck.
- The chance you will get the card when buying a pack.
However, a card's rarity does not determine:
- The card's power.
Instead, the card is balanced around how important they are to the average player. For example, Legendaries and Epics usually have more access to splashy or unique effects in a way that lower-rarity cards don't, and Commons and Uncommons usually have more general-use effects, or effects that need to be consistent for a certain playstyle to function.
Types of Rarity
Able to have four copies of it in a deck.
Stripe colour = White.
Able to have three copies of it in a deck.
Stripe colour = Blue.
Able to have two copies of it in a deck.
Stripe colour = Purple.
Able to have one copy of it in a deck.
Stripe colour = Red.
Able to have one copy of it in a deck. Rarer than Epic.
Stripe colour = Gold.
Able to have zero copies of it in a deck. Reserved only for cards that are given by other cards, such as the Titano Limbs.
Stripe colour = Black.