Abyss Sanctuary: Throne Room (BT24-090) - Time Stranger

While you have no face-up security cards, you can ignore this card's color requirements.
[Security] [All Turns] All of your blue or yellow [TS] trait Digimon
gain [Blocker]. While you have [Neptunemon] or [Venusmon], all of your blue or yellow [TS] trait Digimon gain [Alliance].
[Main] Add your bottom security card to the hand and place this card face up as the bottom security card. Then, you may play 1 blue or yellow [TS] trait Digimon card from your hand with the play cost reduced by 3.

[Security] You may play 1 level 4 or lower blue or yellow [TS] trait Digimon card from your hand or trash without paying the cost.