Remember when Halqifibrax was the face of synchro and the degenerate decks it brought into existence? Now imagine that guy as an entire archetype!
The Horus engine also grants Crystron extra plays, protection and beatsticks as well, giving them a significant buff!
Crystron is a difficult deck to play because of all the combo lines for each sort of gamestate, so it rewards a highly skilled pilot. If you're looking for a powerful midrange deck that catches duelists off-guard on ladder with weird combo lines, I highly recommend playing Crystron!
ARCHETYPES AND DECKBUILDING
The CRYSTRON cards form the foundation of this deck, and it is a strategy that turbos out tuners that enable it to make quick-synchro plays during your opponent's turn. The Crystron deck core is fairly compact, consisting of 17 cards.
The 3-ofs in the deck are Inclusion (searches any Crystron card) and Smiger (searches spell/trap, basically Inclusion) since they are both 1-card combos that get you your full board and GY set-up. Sulfefnir is a 3-of as well since it is a important combo piece that replaces itself (just like Kashtira Fenrir)!
2-of Tristaros are used since it is the key piece of the deck which allows synchro summoning during your opponent's turn, and can summon 2 Crystrons at once from your deck. It is this deck's best normal summon, since if your opponent does something, it can react to it to immediately and synchro summon. This number can be bumped up to 3 if you like extra consistency. Sulfador is used at 2 as well since it's a double foolish burial! It's a highly searchable combo piece, but two is needed for an extended grind game.
1-of of Prasiortle (extender that summons from hand) and Thystvern (searches monster) are used since they are highly searchable combo pieces, each with a certain specific use in different situations. 1 Cluster is used as this deck's ace trap card interruption, able to destroy an opponent's card by shuffling back Crystron cards from the GY or Banishment - giving the strategy potentially infinite grindgame!
A tiny HORUS package of 5 cards. It makes the deck more powerful because it boosts consistency (The Zombie Vampire), provides protection (Galaxy-Eyes Photon Lord). The Horus monsters are fairly powerful themselves, bulldozing most threats off the board during the battlephase, especially with King Sarcophagus' removal.
This Crystron decklist has 17 STAPLE cards! The standard "Maxx C" package is included as well as Crossout and it's targets. 1 Foolish Burial is added for consistency.
COMBOS AND GAMEPLAN
In terms of interruption, the board that Crystron sets up is relatively straightforward. It ends on 1 targeted pop with Cluster, 1-2 spell/trap negates with F.A. Dawn Dragster and potentially triple monster banish from field/GY with Quariongandrax. Some hands can pivot into Cyber Dragon Infinity's omni-negate.
Regarding execution of the Crystron strategy, it's fairly difficult to sequence interruption properly, especially if your opponent doesn't play into it. Crystron's gimmick is all about quick-synchroing during your opponent's turn, and those actions are only available during your opponent's Main Phase or Battle Phase. If you don't have proper synchro materials on-board or in GY, the quick synchros won't work, especially Quariongandrax which specifically requires two tuners.
That being said, if you get handtrapped, you can generally still end on Cluster's targeted destruction and sit on your handtraps. Next turn, you can attempt to combo again with your set-up GY/Banishment.
Here a regular 1 card opening for Crystron:
Inclusion = Double F.A Dawn Dragster (x2 S/T negate), Crystron Quariongandrax (triple monster banish in-field/GY), Crystron Cluster (targeted pop), + follow-up for next turn.
Activate Inclusion to search for Sulfador.
Activate Sulfador targeting Inclusion to destroy it.
On-summon, Sulfador sends to the GY Cluster and Thystvern.
Banish Thystvern in the GY to search for Tristallos.
Normal Summon Tristaros.
Synchro summon Eleskeletus using Tristaros + Sulfador.
On-summon, Eleskeletus recovers Cluster from the GY.
Banish Tristaros from the GY to destroy Eleskeletus and summon Sulfefnir and Rosenix.
Activate Eleskeletus' trigger effect when destroyed to summon Tristaros from Banishment.
Activate Rosenix's effect to targeting Sulfefnir to destroy it and summon Citree from deck.
Activate Sulfefnir's effect to summon another Sulfefnir from deck.
Synchro summon F.A Dawn Dragster using Citree + Sulfefnir.
Banish Inclusion from the GY to summon Citree from the GY.
During your opponent's Main/Battle Phase, activate Citree to summon Sulfefnir from the GY to synchro summon a second F.A Dawn Dragster using Citree + Sulfefnir.
During your opponent's Main/Battle Phase, activate Cluster to target destroy 1 card your opponent controls by shuffling back Citree from Banishment.
During your opponent Main/Battle Phase, activate Tristaros summoning Citree from deck to synchro summon Quariongandrax using Tristaros + Citree + level 5 F.A. Dawn Dragster (level 5 since it negated earlier).
For your follow-up next turn, your GY, Hand and Banishment have enough starters and extenders to continue grinding the game out and possibly finish the game!
Going first, you make decent board from 1 card while you have handtraps in hand while generating plenty of follow-up for next turn.
Going second, you weaken your opponent with the 16 handtraps/staples you have. Then Crystron cards can weave their way through interruption and handtraps when played properly!
This is only a basic combo for the deck, there are tons of 1-2 card combos Crystron can do. If you want more combos, feel free to check out Yacine656's or SuperNix's combo videos in Youtube!
GENERAL TIPS
Personally, I found that the hardest part of playing this deck is figuring out when to pull the trigger for your interruptions. Learning to properly sequence your interruptions, especially in the heat of the moment is difficult, so practice a lot! Otherwise, the deck is simple and straightforward to learn.
The interruptions from Crystron is relatively minor compared to decks with bigger boards like Ryzeal and Maliss. The strength of Crystron comes from resilience through interruption and a robust grindgame. If you can force out a grindgame from your opponent with full Crystron set-up you have a high chance of winning.
Want to see the deck in action? Scroll to the very bottom for the Youtube video!
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