[When Digivolving] You may place 1 card with [Royal Knight] in its traits and a play cost of 13 or less from your hand or trash under this Digimon as its bottom digivolution card. Activate 1 of that Digimon s [When Digivolving] effects as if it was one of this Digimon s effects. Then, [Blitz].

[All Turns] While a card with [Royal Knight] in its traits is in this Digimon s digivolution cards, this Digimon gains [Piercing]
and [Blocker], and gains [Security Attack +1] for each such card.