[When Attacking] You may play 1 Digimon card with
[Sistermon] in its name from your hand or trash
without paying its memory cost. [Your Turn][Once Per
Turn] If you have another Digimon in play, this
Digimon gets +3000 DP and <Piercing> for the turn.
(When this Digimon attacks and deletes an opponent's
Digimon and survives the battle, it performs any
security checks it normally would.)