Cards are the main component of Sonic Blitz. All cards have Attack, Health, and Energy.

• A card with 3 points of Attack will deal 3 damage to your opponent’s Force Field or the cards they’re using when Dash is activated. 
• A card with 3 points of Health will only survive attacks from other cards with an Attack lower than 3.
• A card with 3 points of Energy costs 3 energy to be played.

Almost all cards have unique abilities that will trigger:

• On Reveal: After you put them in the field
• On Battle: While the character is on the field
• After Battle: After every turn, for as long as the character is on the field

Cards can be upgraded from 1 to 6 stars using Gold and Star Coins. Upgrading cards will increase their stats and sometimes also upgrade their ability.