Return to the Primogenitor (BT17-097) - Secret Crisis

[Main] 1 of your Digimon may digivolve into a level 5 or higher Digimon card with the [Free] trait in the hand with the digivolution cost reduced by 4. Then, place this card in the battle area.
[All Turns] When one of your Digimon with the [Free] trait would be deleted other than by one of your effects, [Delay].
• By digivolving that Digimon into a Digimon card with [Imperialdramon] in its name in the hand without paying the cost, prevent that deletion.

[Security] You may play 1 Tamer card with [Davis Motomiya] or [Ken Ichijoji] in its name from your hand or trash without paying the cost. Then, place this card in the battle area.