You must trash a card from your security stack in order to activate it
If you added a card, Recovery +1 (Deck)
Note, an Ultimate Cup is another type of alternate gameplay format, which requires all cards in the deck to contain one consistent color throughout, which limits the amount of variation
Negate all Trap effects your opponent controls." When this card leaves the field, destroy the equipped monster
Meanwhile Coral Colony (and the slightly inferior Doorkeeper) are much easier to work into various decklists as a nice blocker and mana-sink mill source
Promo Info theme booster CLASSIC COLLECTION[EX-01] CLOSECLOSE EX1-030 SR Digimon Lv.5 Angewomon Color Yellow Form Ultimate Attribute Vaccine Type Archangel DP 7000 Cost 8 Digivolve Cost 1 3 from Lv.4 Digivolve Cost 2 - Upper Text [When Attacking] If you have 3 or more security cards, 1 of your opponent's Digimon and all of your opponent's Security Digimon get -3000 DP for the turn