Attack Step
Rest your active Leader or an active Character to declare an attack, then choose a target: your opponent's Leader or one of their rested Characters. Active Characters cannot be attacked. [When Attacking] effects activate now.
Block Step
The defender may rest one active Character with [Blocker] to make it the new target. Only one Blocker can be used per battle.
Counter Step
The defender may, as often as they like, trash Character cards with a Counter value from their hand to add that power to their Leader or a Character for this battle, at no cost. They can also pay for Event cards with [Counter].
Damage Step
Compare power. If the attacker's power is equal to or higher than the target's, the attacker wins: ties go to the attacker. A losing Character is K.O.'d and goes to the trash; a losing Leader takes 1 damage. If the attacker's power is lower, nothing happens.
Taking damage and Triggers
For each point of damage, the defending player adds the top card of their Life to their hand. If it has a [Trigger], they may reveal it and use that effect instead, after which the card goes to the trash unless the effect says otherwise. This is the hidden cost of attacking: every Life card your opponent loses becomes a card in their hand, often a Counter.
End of the battle
Effects that last during this battle end, and you return to your Main Phase to play more cards or attack again.