[When Attacking] You may play a Digimon card with [Sistermon] in its name from your hand or trash without paying its memory cost. [Your Turn] [Once Per Turn] When you play another Digimon, this Digimon gets +3000 DP and gains <Piercing> (When this Digimon attacks and deletes an opponent's Digimon and survives the battle, it performs any security checks it normally would) for the turn.