play usually starts defending in their green zone. He or she does this by flipping over a card into the zone. If the card is a strike with sufficient intercept, and the player pays the energy cost, this initiates a counterattack. If the revealed card is an advantage or ally, it too may be placed in the appropriate area after the cost is paid. If the player cannot pay the cost, or the card cannot be played at the current time, the player can choose to focus the card and store it face down as stored energy. When an attack is not stopped, it continues through to the next zone, where the player again flips over a card and has a chance to take an action. If the player is already in the red zone when this occurs, the opponent scores a point and may celebrate. Signature moves If all of a given player's zones have become charged, he or she may choose to use a signature move (assuming the energy costs can be paid). To do so, the player uncharges the zones and reveals the signature strike hidden within his or her Chamber card. All signature move cards have two different moves, one on the front, and one on the back. The Chamber card always begin with the weaker, front-facing move ready to be used. After a signature move is played, it is flipped over before being placed back into the Chamber card, so that the opposite move is used the next time it is activated. Deck requirements In order to be a legal QuickStrike play deck, a deck must have at least 60 cards, with no more than four copies of any given card. Players must also select a Chamber card, and this then restricts what other cards can go into the deck. Chamber cards have certain trait symbols on them, and any cards put into the play deck must match at least one of these trait symbols. This guarantees that cards are compatible in terms of powers. Cards which don't have any trait symbols can be used in any deck. Each Chamber Card has four symbols that explain which cards they can use: One symbol for strikes, one for advantages, one for allies, and a second for strikes that is specific to that set. Strike Types Bull - Bull strike cards represent an aggressive and offensive style