Beat (ビート Bīto) is a mechanic associated with red Tawil cards.
Certain abilities cause your cards to become beats, causing them to be removed from play and set aside. Other abilities become active based on the number of beats you currently have. At the end of the turn, all of your beats are put into the trash. As a result, Red Tawil gameplay revolves around increasing the beat count by a large number in a single turn to use more powerful abilities.