ATK

ATK Values are numbers that represent the health of a beast. A beast's ATK Value is used to determine whether it wins or loses a skrimish with another beast. Beasts' ATK Values can be altered by effects and, as such, it is useful to use a pad and pen to keep track of them.

A Beast's Base HP Value (The value at which its HP is set before any changes are made) is written in the lower-left corner of the card.