Yggdrasil Royal Knight Deck Guide

This guide will give all information you needed about the Yggdrasil deck that originated in BT13: Booster Versus Royal Knights

BT13 has arrived in Digimon TCG, and with it comes the titular archetype of the booster set: The Royal Knights. Many Royal Knights-themed decks already existed, but this current deck is based on Yggdrasil 7D6 so we will call this deck Yggdrasil deck, Yggdrasil Royal Knights, or Royal Knights. Pick what suits you.

This guide will be updated regularly.

Table of Content

  1. Introduction
  2. Lore
  3. King and His Knights
  4. Past Knights
  5. Future Knights
  6. King's Royal Subjects
  7. King's Nemesis
  8. Decklist Sample  

1. Introduction

Yggdrasil deck or Royal Knights deck is a strategy that originated in BT13. It builds around the effect of Yggdrasil 7D6. As such, evolution is discouraged. Playing many Knights with different names is encouraged. 

Yggdrasil is the first card in the game that has effects that activate in the Breeding Area, second Digi-Egg since Mother D-Reaper that has effect other than inherited effect, and the second white Digi-Egg in the game.

2. Lore

The Royal Knights are a group of thirteen Holy Knight Digimon that are the Digital World's sacred guardians and are famed among Digimon as guardian deities of the Computer Network. The group was founded by Imperialdramon: Paladin Mode and serves Yggrasil. 

3. King and His Knights

Yggdrasil 7D6

Bread and butter of the deck. His effect may reminds us to Mother D-Reaper because both of them are Digi-Eggs with many effects. Unlike Mother D-Reaper, Yggdrasil doesn't have any DP so he can't be brought out to the Play Area. We should not worry about that because Yggdrasil's effect applies even when he stays in the Breeding Area. The god of Digital World doesn't need to come into the battlefield himself, does he?

Let's discuss each of his effect:

[Breeding] [Your Turn] Your Digimon can't digivolve.

His first effect prevent our Digimon from evolving. This means we can only play them directly from our hand without digivolving. As such, Digimon that relies on digivolve effect is not recommended in the deck. Playing Digimon directly from our hand will be expensive memory-wise, that is where his second effect comes in.

[Breeding] [Your Turn] [Once Per Turn] When you play a Digimon card with the [Royal Knight] trait, you may reduce its play cost by 4, and reduce the play cost by 1 for each of this Digimon's digivolution cards.

His second effect reduce the play cost of Royal Knights by four. He can also gives more reduction for each of its Digivolution card. This effect ease the cost of playing Royal Knights so we can play our knights without giving our opponent too much memories. But how can a Digi-Egg has any Digivolution card?

[Breeding] [Start of Your Main Phase] Reveal 1 card from your Digi-Egg deck, then place that card and all of your Digimon with [Royal Knight] trait at the bottom of this Digimon's digivolution cards.

His third effect is the source of his Digivolution cards that is referred to in his previous effect. At the start of our Main Phase, Yggdrasil will pull a card from Digi-Egg deck, and all Royal Knights in our Battle Area. 

This effect means two things: 

  1. It is recommended that we play a knight every turn, so it can be absorbed by Yggdrasil for boosting its cost-reduction effect.
  2. Our Royal Knight won't be on the field for more than a turn so they won't be able to attack without Rush.

Yggdrasil also has an inherit effect:

[Breeding] [Your Turn] [Once Per Turn] When you place an Option card with the [Royal Knight] trait in your battle area, gain 1 memory.

This inherit effect make it so we only fill your Digi-Egg deck with copies of Yggdrasil. This effect also gives an incentive for playing Royal Knights Option card. We can get maximum of three memories per Option card from full-stacked Yggdrasil.

Play 4 always.

Jesmon

Jesmon is a knight that already has his own deck and his own evolution line. It is revolves around summoning a bunch of Sistermons to gain multitude of effects.

[On Play] [When Digivolving] Choose any number of your opponent's Digimon whose total DP adds up to 6000 or less and Delete them. For each other Digimon you have in play, add 2000 to the maximum DP-based deletion effects.

Jesmon is our answer to floodgate monsters. He even can kill two floodgates on his own. He has a cheap cost of 11 memory, meaning we can always play him from the hand. This effect gets better if you have other Digimon in play. 

[All Turns] For each other Digimon with the [Royal Knight] trait or [Sistermon] in their names you have in play, all of your Digimon get +1000 DP.

This effect boosts all our other Digimon considerably, making it easier for our Digimon to survive security checks. 

Play 2-4.

Gankoomon

Unlike Jesmon, Gankoomon doesn't have his own deck or evolution line. He is usually found in a Jesmon deck. It is fitting because in the lore he is acting as a father figure to Jesmon. 

Blocker

[On Play] [When Digivolving] You may play 1 Digimon card with [Sistermon] in its name from your trash or 1 Digimon card with the [Royal Knight] trait from the digivolution cards of one of your Digimon in the breeding area without paying its cost. You can't play [Gankoomon] or [Omnimon] with this effect.

Gankoomon doubles as a blocker and a toolbox card. He can summon his allies from within Yggdrasil. This means we can reuse Magnamon's draw effect, Jesmon's deletion effect, Dynasmon's search effect, and more. It is important but you don't want to see him clunking your opening hand. 

Do not underestimate his blocker effect. Even level 6 Digimons will have difficulties to try to surpass 13000 DP. It will help us to stall for Omnimon.

Play 2-3.

UlforceVeedramon

UlforceVeedramon is also a knight that already has his own deck and his own evolution line. The fastest Royal Knight, his deck usually plays a bunch of tamers so he can unsuspend and attack multiple times in a turn.

[On Play] [When Digivolving] For each of your Digimon with the [Royal Knight] trait and each of your blue Tamers in play, trash the top 2 digivolution cards of 1 of your opponent's Digimon.

A nice effect that is only needed in a specific situation. If your opponent's Digimon has troublesome inherited effects, Ulforce can take care of them. If Ulforce is played by Omnimon's effect, chances are we will trash 8-10 digivolution cards from our opponent's board. If we play blue Tamers in our deck, this effect will get stronger too.

[Your Turn] [Once Per Turn] When you play a Digimon with the [Royal Knight] trait or a blue Tamer, return 1 of your opponent's Digimon with no digivolution cards to its owner's hand.

The second effect is also a situational effect. Even then, he is cheap and can be fetched through BT3 Davis

Play 1-2.

Magnamon

The only Royal Knight that is not a Mega Level. 

Blocker

[All Turns] When this Digimon would leave the battle area, <Draw 1> (Draw 1 card from your deck). Then, you may play 1 [Veemon] from your hand or from this Digimon's digivolution cards without paying its cost.

He is a cheap blocker that replaces itself with a draw. He only costs two memories to play as a 7000 DP blocker in the first turn thanks to Yggdrasil's cost-reduction effects. Best starter card other than Dynasmon that we always want to see in our opening hand.

Play 4 always.

Kentaurosmon

[On Play] [When Digivolving] If the total cards in both players' security stacks are 6 or less, gain 3 memory, then reveal 1 yellow card from your hand and place it on top of your security stack face down. If you don't, return it to your hand.

His first effect needs us to play many yellow cards in the deck. Usually, Magnamon is the only other yellow card played in the deck. We might try building our deck with more yellow tamers to facilitate this effect. 

[When Attacking] [Once Per Turn] By trashing the top card of your security stack, unsuspend this Digimon, and 1 of your opponent's Digimon gets -7000 DP for the turn.

His second effect is better in his own deck. In this deck, it is nice to have but it is not needed. Royal Knight endgame typically has many knights attacking the opponent's security for the win. 

Play 0-2.

Play 1-3 if you play yellow Tamers or yellow Options.

Leopardmon

[When Digivolving] [Main] [Once Per Turn] You may play 1 Digimon card with the Royal Knight trait or 1 green Digimon card from your hand for its play cost. When played by this effect, reduce the play cost by 4.

He is similar to Gankoomon but he summons from hand. Same as UlforceVeedramon, he is cheap and can be added by BT3 Davis. Be careful because Yggdrasil's cost-reduction effect can only be used once per turn. If you have already used it to discount Leopardmon's cost, you can't use it again to discount whatever Royal Knight he played from the hand.

[All Turns] When you play another Digimon, all of your Digimon with the Royal Knight trait and all your green Digimon gain Blocker (When an opponent's Digimon attacks, you may suspend this Digimon to force the opponent to attack it instead) until the end of your opponent's turn.

His first effect triggers his second effect. It makes him a nice defensive option in the mid to late game.

Play 1-4

Examon

Examon already has his own deck and digivolution line. His deck is a control deck featuring DNA Digivolution.

[On Play] [When Digivolving] Suspend 1 of your opponent's Digimon. That Digimon doesn't unsuspend during your opponent's next unsuspend phase.

Examon is rather useless in this deck and he has such a high cost. He is useful only if your opponent has a single blocker that has to be suspended at all costs in your final offensive turn.  

[All Turns] [Once Per Turn] When an opponent's Digimon becomes suspended, you may activate 1 of the effects below.

  • Suspend 1 of your opponent's Digimon.
  • Unsuspend 1 of your Digimon.

His second effect is useful only if we have another blocker to pair him with. That will not happen often. His only redeeming feature is that he can be searched by BT3 Davis if you run him. 

Play 0-2

Alphamon

Alphamon already has his own deck and his own digivolution lines. His deck revolves around attaching cards to our Digimon's digivolution card.

[On Play] [When Digivolving] By placing 1 Digimon card with the [X Antibody] trait or the [Royal Knight] trait from your trash under this Digimon as its bottom digivolution card, all of your opponent's Digimon with a play cost of 10 or higher can't attack players until the end of your opponent's turn.

His first effect is useful to prevent our opponent's boss Digimon to attack us. This makes them can only attack with smaller Digimon and risk them checking our high DP securities card.

[All Turns] [Once Per Turn] When this Digimon would leave the battle area by an effect, by returning 1 Digimon card with the [X Antibody] trait or the [Royal Knight] trait from this Digimon's digivolution cards to the bottom of your deck, prevent it from leaving play.

The second effect is pretty good. Alphamon is the only knight that can resist Yggdrasil's effect. So he can attack the turn after he is played. But we need knights in the trash. Dynasmon and Sistermon can be used to set up his effect.

Play 2-3. 

Craniamon

Craniamon has a deck that revolves around Blocker strategy even though he doesn't have a digivolution line yet.

Blocker (When an opponent's Digimon attacks, you may suspend this Digimon to force the opponent to attack it instead).

[On Play] [When Digivolving] This Digimon isn't affected by the effects of your opponent's Digimon until the end of your opponent's turn.

His On Play effect is very effective against decks that rely on Digimon's effect for removal. Craniamon will be harder to remove thanks to his one-turn protection.

[End of Opponent's Turn] Choose 1 of your opponent's Digimon. Your opponent must attack with it.

His second effect is pretty good as you can force your opponent's smaller Digimon to attack and then block it with Craniamon. More blockers also won't hurt.

Play 1-3.

Dynasmon

LordKnightmon's best friend. In some lore, he is Lucemon's servant instead of Yggdrasil so his effect reflects this.

[On Play] [When Digivolving] Reveal the top 4 cards of your deck. Add 2 cards with [Lucemon] in their names or the [Royal Knight] trait among them to your hand. Trash the rest.

He is the best starter in the deck. For only five memories he adds two cards. He should be our priority to summon with Gankoomon to gain more knights. 

[Your Turn] When you play a Digimon with [Lucemon] in its name or the [Royal Knight] trait, delete all of your opponent's level 4 or lower Digimon.

If we manage to play Dynas without ending our turn, we can play a Magnamon to wipe out all of our opponent's level 4 or lower Digimon. That's very useful against swarm decks such as Bloomlordmon and Aegisdramon.

Play 4 always.

LordKnightmon

Dynasmon's best friend. In some lore, he is Lucemon's servant instead of Yggdrasil so his effect reflects this.

[On Play] [When Digivolving] Return 1 card with [Lucemon] in its name or the [Royal Knight] trait from your trash to your hand.

While Dynasmon adds knights from the deck, LordKnightmon adds knights from the trash. This effect is useful to recycle our knights from the trash.

[Opponent's Turn] [Once Per Turn] When an opponent's Digimon attacks, gain 1 memory for each of your Digimon with the [Royal Knight] trait.

This effect is nice to have. But it is not dependable as a defensive measure against your opponent. We better depend on Magnamon and Craniamon to hinder attacks. 

Play 1-2.

Gallantmon

When you would play this card from your hand, if you have no Digimon in play, reduce the play cost by 2 for every 5 cards in both players' trash.

Gallantmon has this gimmick where he grows stronger the larger both player's trash are. In this case he got even more cheap to play. This effect makes him easy to play without ending your turn.

Rush (This Digimon can attack the turn it comes into play).

The only knight that has Rush. This makes him useful to poke our opponent's security if we haven't gotten our Omnimon yet.

[On Play] [When Digivolving] [When Attacking] Delete 1 of your opponent's Digimon with the 6000 DP or less. If no Digimon was deleted by this effect, delete 1 of your opponent's Digimon with the 13000 DP or more instead.

Rush make the removal effect activates twice in a single turn, possibly decimating your opponent's board.

Play 2-3.

Omnimon

[On Play] [When Digivolving] Delete 1 of your opponent's Digimon, or you may play 1 of each Digimon with the [Royal Knight] trait and a different name from the digivolution cards of a Digimon in your breeding area without paying their costs. When a Digimon is played by this effect, trash 1 of your Digimon in the breeding area, and all of your Digimon gain Rush (This Digimon can attack the turn it comes into play) for the turn.

Our finisher. His effect also kills Yggdrasil, so make sure you win in that turn. Summon as many knights as you can with his effect and defeat your opponent in that same turn.

On the other hand, with no Yggdrasil it means we can digivolve again. 

Play 2-3.

4. Past Knights

From Master to Disciple

This card searches Royal Knights and Sistermon, but you have to play red Tamer to enable it. Its effect also sets up Gallantmon. Its delay effect sadly is not too useful in this deck. But because this card has the Royal Knight trait, we can use this card for free searches.

5. Future Knights

Reserved for Royal Knight from upcoming sets.

6. King's Royal Subjects

Now we will discuss other cards that are not Royal Knights but support them.

Salamon

This card is pretty good in Royal Knight. Cheap cost and searching effect? Yes, please. Her other perk is that she only cost three memories. If you have a memory setter you can play this first, search a knight, then play the searched knight. She is also green which can be searched by BT3 Davis.

Omekamon

This card is rather slow because he needs to be deleted first before he can add knights under Yggdrasil. Moreover, with four memories your turn will end immediately even if you have a memory setter.

Sistermon

Sistermon archetype has synergies with Gankoomon. ST12 Sistermon Blanc is a generic draw card, while BT7 Sistermon Ciel (Awakened) is useful to remove floodgate Digimon.

Memory Setter Tamer

Memory Setter is nice to have but not mandatory in this deck. Several memory setters that will work well in this deck are BT3 Davis, BT8 Hiro, and BT9 Kiyoshiro

BT13 Marcus is pretty good in this deck. Red enables red staple cards such as Fire Ball, and Crimson Blaze. Red also enables From Master to Disciple. Yellow synergizes with Kentaurosmon. His effect also can kill floodgate Digimon which all have 3000 DP or less.

Quake! Blast! Fire! Father!


This card is a nice Royal Knight support. Sadly we will not have 
many opportunity to use this card. The usual play of Royal Knight deck is play a Royal Knight then end the turn because the memories has passed. But we can still play this card if we have Alphamon on the field that resisted Yggdrasil's effect.

X Program

A white Option card that can wipe multiple Digimons. Yggdrasil is white so white Option card is accessible to us. The only downside of this Option is if our opponent uses X Antibody deck. Only use this card if your meta has little to no X Antibody deck.  



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