[On Play] If it's your turn, you may digivolve 1 of your Digimon into a Digimon card with [Royal Knight] in its traits in your hand for its digivolution cost. [Your Turn] (Once Per Turn) When one of your Digimon digivolves into a Digimon with [Huckmon] in its name or [Royal Knight] in its traits , gain 1 memory.