Planning out what cards could be in your Security stack is essential for good deckbuilding in the Digimon Card Game. Since the Security stack is made at random, it's usually wise to fully max out the cards you want to be in Security to further increase the odds of them being checked when your opponent attacks.

Related: Digimon TCG: Best Staples

Most Option cards in the game have effects that trigger once checked. Whether the effect is the same as the one that activates when it is played by paying its memory cost or a different effect altogether, these effects are helpful when keeping your opponent at bay.

10 Breaclaw

Breaclaw is a great addition to the Gammamon deck. Most of the time, red decks tend to be a bit slower and are not great at drawing and pushing their advantage in the Battle Area. Decks like Bloomlordmon and even Blue Flare can outpace red decks consistently.

When Breaclaw is checked in Security, it allows you to play a Gammamon from the trash or your hand for free. Paired with the ST11 Gammamon, you can delete pesky rookie loitering about in your opponent's Battle Area.

9 Burning Star Crusher

Burning Star Crusher is a very situational card within the Xros Heart archetype. Hardly ever will you have enough memory to have both a level four Shoutmon in play and enough memory to play this card.

The thing that keeps this card relevant is its Security effect. This card can search your deck for a Xros Heart card, and if by chance you manage to reveal a Taiki Kudo in the three cards, you get to play him for free. That makes it two searches in a row, giving you two more cards in hand and a Tamer set up with material for the next DigiXros.

8 Plasma Deckerdra Launcher

One of the many removal cards in the Digimon Card Game, Plasma Deckdra Launcher, or PDL for short, can remove even a huge level seven Digimon. Level seven Digimon are, most of the time, very difficult to deal with, but with PDL, that task becomes another day's work.

When checked in Security, PDL turns into a copy of Cocytus Breath, being able to return to the opponent's hand any Digimon of your choosing, regardless of level.

7 Healing Therapy

Healing Therapy becomes a scary card once it is in Security. The Venusmon deck already aims to lower the amount of Security of your opponent's Digimon. If, by any chance, an attack goes through and hits Healing Therapy in Security, its main effect will trigger, giving one of your opponent's Digimon Security Attack -1.

Related: Digimon Card Game: Best Cards From BT10 Xros Encounter

Not only does it stop any following Security attacks from that Digimon, but the card's power increases ten-fold if Venusmon is already in the Battle Area.

6 Loenkhe Adistakto

Loenkhe Adistakto is a bit of a double-edged sword. On the one hand, it can remove an opponent's Digimon by reducing its DP, but if you have less than three cards in Security, the Digimon will be placed on top of your opponent's Security stack.

While this is a great way to remove cards with protection effects, it may become a problem in the following turns since you gave your opponent a recovery to their Security, and now you are aware that there is a big Digimon as a threat waiting for your next attack.

5 Gran Del Sol

Gran del Sol is a removal card that green so desperately needed. Like most hard removal cards, its memory cost can be quite steep at eight memory, but the value that Gran del Sol gives you is immense when checked in Security.

Not only do you not have to pay any memory, but it then suspends one of your opponent's Digimon and sends a suspended Digimon to the bottom of the deck. If your opponent isn't playing a purple deck, chances are they will never see that card again for the duration of the game.

4 Defense Plug-In C

Defense Plug-In C sits at a weird spot when it comes to Security effects. Being a Plug-In card, it wants to be played in a Sakuyamon deck where most of your cards synergize with it, but with its Security effect of searching for a Digimon from the top three cards and playing a Digimon that costs four memory or less, it becomes the perfect support for DarkKnightmon.

Related: Digimon Card Game: Best Green Cards From Xros Encounter

Most of the pieces you need to DigiXros into DarkKnightmon cost four memory, so adding this card to the DarkKnightmon deck for a bit of spice might not be the worst idea.

3 Buzzing Fist

The Bagra Army archetype was introduced in BT10, and while not as great as decks like Xros Heart or Bloomlordmon, it is one of those archetypes that will get better in sets to come.

Buzzing Fist is one of the best cards for Bagra Army. When checked in Security, Buzzing Fist allows you to play a Yuu Amano from your hand for free, allowing you to set your Save plays in future turns. Keep in mind that this effect is an errata. If you currently own the card, the effect reads that you get to play a black Tamer for free, but this was changed by Bandai.

2 Death The Cannon

The Beelzemon deck was always a bit luck-based since most effects trigger depending on what cards are milled from the deck. Beelzemon never had any type of big removal until Death the Cannon. The deck was able to remove threatening Digimon through cards like Death Slinger or even EX2 Beelzemon, but their effects required you to have up to forty cards in the deck. This meant you were only able to remove Mega Digimon in the late game, and when decks like MetalGarurumon X can spit out a Mega after turn three, this bodes as a problem for Beelzemon.

1 Reinforcement Plug-In 0

Any card that gains you memory when checked in Security is a great defensive option. Cards like Ice Wall!, Hammer Spark, or even X-Antibody can preemptively end your opponent's turn when they attack. Reinforcement Plug-In 0 is another addition to this group of cards.

Not only does Plug-In 0 gain one memory but after the Security check, the card gets added to your hand for later use in the many Sakuyamon Option loops, giving you a slight DP boost to topple over the competition.

Next: Digimon Card Game: Best Black Cards In Xros Encounter