Central Town: Throne Room [BT24-094] [Time Stranger]

When you have no face-up security cards, you can ignore this card's color requirements.
[Security] [All Turns] All of your green or yellow [TS] trait Digimon get +2000 DP. While you have [Merukimon] or [Minervamon], all of your green 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 green 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 green or yellow [TS] trait Digimon card from your hand or trash without paying the cost.