I know I'm a little late , meaning this guide came out when Resonators were already nerfed and banned. But that's okay, they're still going strong and I'm here to write about Resonators Post Banlistttt

Resonators Guide (Post Banlist 5/2025)
Sections covered in this guide:
Skill
Witness Why I Am Known as the True King! (Skill Card) (100%)






Witness Why I Am Known as the True King! (Skill Card)
ATK:
0
DEF:
0
You can only use this Skill's second and third effects once per Duel. 1: You cannot Normal or Special Summon any monsters, except Synchro Monsters and Level 5 or lower Dragon/Fiend monsters. 2: Send 1 card from your hand and 1 card you control to the Graveyard, then play 1 Level 8 "Red Dragon Archfiend" monster from your Extra Deck in face-down Defense Position. (Its battle position can be changed.) 3: If you control "Red Nova Dragon" or only your opponent controls a monster, Set 1 "Fiendish Chain" from your hand or Deck. (This card can be activated the same turn.)
"Witness why I am the True Dragon!!" (Witness Why I Am Known As True King)
In this tutorial, instead of listing the cards, translating the effects of the cards and adding how to play, I will write in the style of a Deck Build tutorial and then show you how to combo (how to play)!
Deck Building Guide
Now, the deck doesn't necessarily have to have 30 cards , but this deck is so stable that 30 cards still allows us to play very smoothly , while adding all the staple cards we want .
So now I'll go through the list of cards in the Deck :
Soul Resonator (x2)








Soul Resonator
ATK:
500
DEF:
200
If this card is Normal or Special Summoned: You can add 1 Level 4 or lower Fiend monster from your Deck to your hand, except "Soul Resonator", also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except DARK Synchro Monsters. If a card(s) you control would be destroyed by card effect, while you control "Red Dragon Archfiend" or a Synchro Monster that mentions it, you can banish this card from your GY instead. You can only use each effect of "Soul Resonator" once per turn.
Vision Resonator and Crimson Resonator (x3)








Vision Resonator
ATK:
400
DEF:
400
If a Level 5 or higher DARK monster is on the field, you can Special Summon this card (from your hand). You can only Special Summon "Vision Resonator" once per turn this way. If this card is sent to the GY: You can add 1 Spell/Trap that mentions "Red Dragon Archfiend" from your Deck to your hand. You can only use this effect of "Vision Resonator" once per turn.








Crimson Resonator
ATK:
800
DEF:
300
If you control no monsters: You can Special Summon this card from your hand. If the only other monster you control is exactly 1 DARK Dragon Synchro Monster: You can Special Summon up to 2 "Resonator" monsters from your hand or Deck, except "Crimson Resonator". You can only use each effect of "Crimson Resonator" once per turn. You cannot Special Summon monsters from the Extra Deck, except DARK Dragon Synchro Monsters, the turn you activate either of this card's effects.
Red Resonator and Synkron Resonator (x1)








Red Resonator
ATK:
600
DEF:
200
When this card is Normal Summoned: You can Special Summon 1 Level 4 or lower monster from your hand. When this card is Special Summoned: You can target 1 face-up monster on the field; gain LP equal to its ATK. You can only use this effect of "Red Resonator" once per turn.








Synkron Resonator
ATK:
100
DEF:
100
If a Synchro Monster is on the field, you can Special Summon this card (from your hand). You can only Special Summon "Synkron Resonator" once per turn this way. If this card is sent from the field to the Graveyard: You can target 1 "Resonator" monster in your Graveyard, except "Synkron Resonator"; add it to your hand.
Bone Archfiend (x3)








Bone Archfiend
ATK:
1800
DEF:
0
If this card is in your hand or GY: You can send 1 other card from your hand or field to the GY; Special Summon this card, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except DARK Dragon Synchro Monsters. You can target 1 face-up monster you control that has a Level; send 1 Fiend Tuner from your hand or Deck to the GY, and if you do, increase or decrease that monster's Level by 1. You can only use each effect of "Bone Archfiend" once per turn.
Fiendish Golem, Fiendish Chain and Scarlet Security (x1)








Fiendish Golem
Target 1 monster on the field with 2000 or more ATK; banish it (until the End Phase of the next turn), then if you activated this card while you controlled "Red Dragon Archfiend" or a Synchro Monster that mentions it, you can Set 1 "Fiendish Chain" directly from your Deck or GY.
Forbidden Droplet (x3)








Forbidden Droplet
Send any number of other cards from your hand and/or field to the GY; choose that many Effect Monsters your opponent controls, and until the end of this turn, their ATK is halved, also their effects are negated. In response to this card's activation, your opponent cannot activate cards, or the effects of cards, with the same original type (Monster/Spell/Trap) as the cards sent to the GY to activate this card. You can only activate 1 "Forbidden Droplet" per turn.
Now it's the Staples' turn.
Forbidden Droplet
→ Very suitable because it can be combined with Crimson Gaia or Fiendish Chain for a cost of throwing it to the grave
Skull Meister, D.D. Crow and Effect Veiler (Hand trap)
Extra Deck (x1)








Hot Red Dragon Archfiend Abyss
ATK:
3200
DEF:
2500
1 Tuner + 1 non-Tuner DARK Dragon Synchro Monster (Quick Effect): You can target 1 face-up card your opponent controls; negate its effects until the end of this turn. When this card inflicts battle damage to your opponent: You can target 1 Tuner in your GY; Special Summon it in Defense Position. You can only use each effect of "Hot Red Dragon Archfiend Abyss" once per turn.








Hot Red Dragon Archfiend Bane
ATK:
3500
DEF:
3000
1 Tuner + 1 non-Tuner DARK Dragon Synchro Monster You can Tribute 1 monster, then target 1 "Red Dragon Archfiend" monster in your GY; Special Summon it. When this card inflicts battle damage to your opponent: You can Special Summon 2 Tuners with the same Level (1 from your Deck and 1 from your GY) in Defense Position. You can only use each effect of "Hot Red Dragon Archfiend Bane" once per turn.








Scarlight Red Dragon Archfiend
ATK:
3000
DEF:
2500
1 Tuner + 1+ non-Tuner monsters This card's name becomes "Red Dragon Archfiend" while it is on the field or in the GY. Once per turn: You can destroy as many Special Summoned Effect Monsters on the field as possible with ATK less than or equal to this card's (other than this card), then inflict 500 damage to your opponent for each monster destroyed.








Red Nova Dragon
ATK:
3500
DEF:
3000
2 Tuners + "Red Dragon Archfiend" This card gains 500 ATK for each Tuner monster in your Graveyard. Cannot be destroyed by an opponent's card effects. When an opponent's monster declares an attack: You can target the attacking monster; banish this card, and if you do, negate that attack. During the next End Phase: Special Summon this card banished by this effect.








Red Dragon Archfiend
ATK:
3000
DEF:
2000
1 Tuner + 1 or more non-Tuner monsters After damage calculation, if this card attacks a Defense Position monster your opponent controls: Destroy all Defense Position monsters your opponent controls. During your End Phase: Destroy all other monsters you control that did not declare an attack this turn. This card must be face-up on the field to activate and to resolve this effect.








Scarred Dragon Archfiend
ATK:
3000
DEF:
2500
1 Tuner + 1+ non-Tuner DARK monsters This card's name becomes "Red Dragon Archfiend" while on the field or in the GY. If this card is sent from the Monster Zone to the GY: You can Special Summon 1 "Red Dragon Archfiend" from your Extra Deck (this is treated as a Synchro Summon), then, if this card was sent to the GY as Synchro Material for a DARK Dragon Synchro Monster, you can destroy all Attack Position monsters your opponent controls. You can only use this effect of "Scarred Dragon Archfiend" once per turn.
Red Rising Dragon (x2)








Red Rising Dragon
ATK:
2100
DEF:
1600
1 Fiend Tuner + 1+ non-Tuner monsters When this card is Synchro Summoned: You can target 1 "Resonator" monster in your GY; Special Summon it. You cannot Special Summon monsters from the Extra Deck the turn you activate this effect, except DARK Dragon Synchro Monsters. During your Main Phase, except the turn this card was sent to the GY: You can banish this card from your GY, then target 2 Level 1 "Resonator" monsters in your GY; Special Summon both.
Red Rising Dragon is the only Extra Deck card that can be played x2 , because the Combo needs to be used again the next turn .
First Combo
Normal Summon Soul Resonator , which will allow you to add Bone Archfiend from your deck to your hand (since Soul Resonator can search for a level 4 or lower Fiend-type monster.)
- Bone Archfiend has the effect: discard 1 card from hand or send 1 card on the field to the graveyard to special summon itself.
In most cases you will be dropping 1 tuner , preferably the Crimson Resonator if you have it on hand.However, you can also discard Fiendish Golem or Fiendish Chain if you have them in hand – for reasons I'll explain later. - From here, you will activate the effect of Bone Archfiend :→ Choose 1 monster you control with a star number ,→ Send 1 Fiend tuner from your hand or deck to the graveyard ,→ Then increase or decrease the level of the selected monster by 1 .→ You will choose Soul Resonator to turn it into level 2 ,→ Send i Crimson Resonator from your deck to the graveyard if you didn't send it when you summoned Bone.
Synchro Summon Red Rising Dragon , then use its effect to summon Crimson Resonator from the graveyard .
- Since you only control 1 Dark Dragon Synchro , you can activate the effect of C rimson Resonator to special summon up to 2 Resonators from your hand or deck :→ Summons Vision Resonator and Synchron Resonator .
- Use Red Rising + Vision to Synchro into Scar Red Dragon Archfiend .→ Vision Resonator will now activate the effect in the grave:→ Find a Spell/Trap that mentions Red Dragon Archfiend – you would choose Crimson Gaia .
- Use Scar Dragon + Synchron Resonator to Synchro into the new boss of Resonator:→ Hot Red Dragon Archfiend Abyss – has the ability to negate once per turn .
- Since Scar Dragon is sent from the Monster zone to the graveyard, you can activate the effect:→ Summon 1 Red Dragon Archfiend from the Extra Deck .
Also, activate Synchron Resonator 's effect in the graveyard to add Vision Resonator back from the graveyard to your hand .
- Special Summon Vision Resonator from hand , then Synchro into Red Nova Dragon using RDA + 2 remaining tuners on the field.
Activate Witness Why I Am Known As True King to set Fiendish Chain from your hand or deck to the field because you control Red Nova Dragon .
- Remember that Crimson Gaia spell you found earlier? Now's the time to use it:→ Find RDA or any card that mentions RDA from the deck or graveyard to your hand .→ In this case, you would choose Fiendish Golem – which can remove 1 monster with ATK of 2000 or more until the end of the next turn .
Additionally, when activated, Crimson Gaia will set 1 Fiendish Chain from your deck or graveyard if you control an RDA or Synchro that mentions it.
- Not only that , Crimson Gaia also helps increase stability because it can summon 1 RDA from the grave if any card on the field is destroyed.→ The “RDA” here can be the original Red Dragon Archfiend , Scar Dragon , or Scarlight Red Dragon Archfiend , as all three are considered RDAs when on the field or graveyard.
Alternative Combo
Combo requirement: you need to have Crimson Resonator and Bone Archfiend on hand, or have a way to find both without using a normal summon.
Since this is turn two, you will start by activating the ability to set Fiendish Chain from your deck .
But wait, how to activate the skill without controlling Red Nova Dragon?
The ability allows you to set Fiendish Chain from your deck if you control Red Nova Dragon or if your opponent has a monster on the field . And it can be activated immediately so don't waste a good tool like this.
Back to the combo:
Special summon Crimson Resonator since you control no monsters.
Normal Summon Bone Archfiend , then Synchro into Red Rising Dragon .
Red Rising activates , summoning Crimson Resonator from the grave .
Activate Crimson's effect to summon 2 tuners from the deck :
Instead of calling Vision and Synchron like the old combo, this time you call Vision Resonator and Soul Resonator
Or you can call Red Resonator and Soul Resonator to target Red Rising and restore 2100 LP (equal to its ATK).
Assuming you choose Red Resonator and Soul Resonator , the next sequence is:
Activate Soul Resonator's effect when special summoned , find Synchron Resonator from deck .
Use Red Rising + Red Resonator to Synchro into Dark End Dragon (previously used to call Void Ogre Dragon ):
Dark End Dragon can remove monsters from the field without destroying them – very useful when going later
Activate Bone Archfiend effect in grave :
Can be summoned from the graveyard by discarding a card or sending a card from the field to the graveyard – just as if it were in the hand.
When recalling Bone, target Soul Resonator , send Vision Resonator from deck to graveyard :
Reduce Soul level to 2
Activate Vision Resonator 's effect in the grave to find Crimson Gaia .
Also, keep Vision cool, because you'll need it later.
Use Bone + Soul to Synchro 1 more Red Rising Dragon , then recall any level 2 Resonator in the grave .
Activate the next part of the skill :
Send 1 card from your hand and Red Rising from the field to the graveyard , to summon Scar Red Dragon Archfiend from the Extra Deck .
Use Scar + the remaining 2 tuners to Synchro into Red Nova Dragon .
Since Scar is off the field, you can call Red Dragon Archfiend from the Extra Deck .
Special Summon Synchron Resonator from hand , then use Synchron + RDA to Synchro into Hot Red Dragon Archfiend Abyss .
Some notes about Deck
When going next turn
We have Scarlet Security , a spell that allows us to destroy the entire backrow of our opponent if we control a Red Dragon Archfiend (RDA) .
A simple way to take advantage of this is to start with Crimson Gaia :
Activate Crimson Gaia to find Scarlet Security from the deck.
Then activate the skill :
Discard the least important card in hand
Send Crimson Gaia from the field to the graveyard to summon 1 RDA to the field .
Once you have RDA on the field, you can activate Scarlet Security to destroy all of your opponent's Spells/Traps .
Typically, you would choose to summon Scarlight Red Dragon Archfiend because:
It considers itself as RDA , so it can still enable Scarlet Security .
More importantly, Scarlet has 3000 ATK , and has an effect that destroys all special summoned effect monsters with lower ATK than it .
Meaning: you destroy the entire backrow , then destroy all the opponent's monsters – before you even actually start the combo .
The effect of Crimson Gaia also allows for retrieving the cards it searched from the deck – but this time from the GRAVE :
This effect is extremely important because it helps to restore resources (loop) .
That's why you don't mind giving up Fiendish Golem , because you can get it back that turn with Crimson Gaia .
Likewise, you would n't mind dropping the Fiendish Chain either:
Although it cannot be found by Crimson Gaia , it can be reset from the grave by Fiendish Golem , and the Golem can be retrieved by Crimson Gaia. → Resource recovery loop.
About hand trap resistance:
Crimson Gaia 's second effect is very useful against Draw & Lock Bird :
When your opponent adds a card from their deck to their hand on any turn → you can discard Crimson Gaia from your hand .
Then, neither player can add cards from the deck to their hand until the end of their turn.
However, it is still possible to add cards from the grave with Crimson Gaia , since it is another source → still maintaining the combo.
A little tip:
Soul Resonator can find Skull Meister when it is normally or special summoned . ( Since Soul can find Fiend monsters level 4 or lower , it is possible to skip Bone Archfiend if it is already there, and take Skull Meister to negate the grave .)
Skull Meister is a hand trap that helps disable activated effects from the grave → very flexible.
A small warning for anyone facing Resonators:
When Scar Dragon (Scarlet) is used as Synchro material for a Dragon - Darkness card , its effect will:
Destroy all of your opponent's attack monsters .
If you don't, good luck , because you're about to lose the whole field....