[Use Req. "[VB] trait"] (Specified cards let you ignore color requirements.)
[Security] [Your Turn] When one of your level 4 or higher [VB] trait Digimon attacks, you may play 1 [VB] trait Digimon card of the same level from your hand with the cost reduced by 3.
[Main] Add your bottom security card to the hand and place this card face up as the bottom security card.