Bystial Centur-Ion

This deck needs no introductions. For the past few formats, it has been a highly consistent deck to compete against the meta. From being the reason Hot Red Dragon Archfiend King Calamity got sent to the shadow realm, to being able to play under the Mulcharmy Cards AND Droll & Lock Bird , Centur-ions find themselves an very niche this format as well. While on the surface, it might seem like a strategy that fails to compete against the likes of Ryzeal, Mitsurugi and even Maliss, well timed applications of the card and the engines in this deck can put up a fight that would give any of the archtypes I mentioned a reason to fail. 

Main Combos

1. Opening: Centur-Ion Trudea - this is one of the main starters in terms of the openers for the deck, not the most optimal, but it can get you where you need to be. She forces the player to open with a normal summon, then using her effect to place herself and any other another Centur-Ion monster from the Hand or MD to the S/T Zone as a Continuious Trap, normally we would choose to place Centur-Ion Primera , then you use Centur-Ion Primera to SS herself from the S/T Zone to your side of the field, which would trigger her on-summon effect, to grab any Centur-Ion card from deck to the hand. If you don't already have a copy of Wake Up Centur-Ion! in your hand, this will be the optimal time to add the card, even thought you may be tempted to add the field spell, do not. Activate Wake Up Centur-Ion! , since you have a Centur-Ion monster in the S/T Zone, you get to SS a token with either LV 4 or LV 8. Optimally, for recursion, SS as a Level 4. Once this is done, Synchro Summon the monster and token for the LV 8 Synchro Centur-Ion Primera Primus , which will add you an Emblema card from Deck or GY to your hand, here you will grab Emblema Oath , then activate it and (if you do not have Centur-Ion Atrii in hannd already) choose to place a Centur-Ion monster face-up in the S/T Zone and place Centur-Ion Atrii (NOTE: Once a Centur-Ion Atrii remains face-up on field during the turn you activate this, you will be locked into only SS Centur-Ion monsters from the ED). Activate Centur-Ion Atrii and SS her from the S/T Zone, then use her on summon effect to Draw a card and then you CAN destroy 2 cards on field, one you control and one the opponent controls. After this, Synchro Summon using Centur-Ion Atrii and Centur-Ion Primera Primus for Centur-Ion Auxila (if you are going 1st or need to search a specific engine piece) or Centur-Ion Legatia (if you are going 2nd or just want additional non-engine resources). Use Wake Up Centur-Ion! in GY, banishing itself to send a Centur-Ion card from deck to GY, you would normally send Centur-Ion Phalanx to recur a Synchro Centruion monster (useful if you get hit with a nibiru). if you have more bodies and can continue to play, do so in a manner that gives you an edge. DO NOT FORGET THE EFFECT OF THE LEVEL 12 CENTUR-ION SUNCHROS AT THE EP TO PLACE ANY CENTUR-ION MONSTER FROM GY OR BANISH ZONE, FACE UP IN THE S/T ZONE.
2. Opening: Stand Up Centur-Ion! - this is the ideal opener for the deck. Start by activating Stand Up Centur-Ion! , use it's effect the turn it was activated to send a card from hand and then place any Centur-Ion monster from deck, face up in the S/T Zone, normally you would choose to grab Centur-Ion Trudea , from here, the combo remains the same as Combo 1. 
3. Opening: Emblema Oath - this is similar to opening Stand Up Centur-Ion! , you normally choose to set a Centur-Ion Spell facedown which would be Stand Up Centur-Ion! , although if you already have the field spell in hand, you are free to choose. If you choose to place the field spell, the combo follows the line of combo 1 and 2, until you have to SS the token, since choosing to Synchro Lv 8, you WILL get to add the Emblema Card from deck or GY to hand, but since Emblema Oath is once per turn, it woul be ideal to SS the token as a LV 8, and Synchro into a Level 12 directly, specifically Centur-Ion Auxila (searching either Centur-Ion Bonds (to place a body in the S/T Zone from the hand or GY) or Centur-Ion Atrii to Normal summon and get an additional draw, this all depends on your preference or hand) or Centur-Ion Legatia (if goinf 2nd and need to move a card that is giving you difficulty).
4. Opening: Centur-Ion Primera - this is normally a card you don't really object to opening with as the only starter, but in formats where Droll & Lock Bird is going around, and opening this as the only starter means you will definitely need to be adding cards to build or break a board, it is not the most optimal. Although, if this is the had you are given, make the most of it. Since this will be you NS, use the effect on Summon to add Stand Up Centur-Ion! to hand (if you get drolled, pray there is no more HT to follow). Then activate Stand Up Centur-Ion! and use the effect to place Centur-Ion Trudea in the S/T Zone from deck. SS Centur-Ion Trudea from S/T Zone as a Lv4. Attempt to place Centur-Ion Trudea back into the S/T zone and place another Centur-Ion monster in the S/T zone with it. Normally the choice is based on what you want your endboard to be, Centur-Ion Gargoyle II is the best option here as it can also modulate it's level and recur itself back into the hand from the GY once used as a synchro material. Remember, in this comboline, you already have a non-tuner Centur-Ion in the S/T Faceup, so you will need to be able to add a tuner Centur-Ion that can SS itself during the opponent's MP. If you opted to Place Centur-Ion Gargoyle II , then SS it as a Lv8 and Synchro Summon using it and Centur-Ion Primera for Centur-Ion Auxila , which will protect all S/T face up on the field. In the EP, place Centur-Ion Primera in the S/P Zone and use them to make either a Crimson Dragon or Centur-Ion Auxila based on the situation. Crimson Dragon is normally a better choice as it can bring and other Synchro 12 from your ED.

Notes/Rulings

1. This deck can be played in a minimal combo way, to avoid Nibiru, the Primal Being and set up to play in the opponent's turn.
2. The Bystials help to give the Centur-Ions an extra push to do some unorthodox plays that can catch opponents off guard.
3. Any Centurion MD Monster + Lv6 Bystial gives you Chaos Angel or Bystial Dis Pater.
4. Any Hand Trap + Level 8 (except Centur-Ion Primera Primus ) give you access to Psychic End Punisher 
5. All Level 12 Centur-Ion Synchros places a Centur-Ion monster from the GY or Banish Zone in the S/T Zone during EITHER player's EP.
6. Crimson Dragon's effect to add a S/T from deck to hand is an on summon effect, the effect to tag out into another synchro monster is a Quick Effect.
7. Stand Up Centur-Ion!'s effect to Synchro Summon does not only trigger when you SS a monster, but also if your Opponent SS a monster. And it does not need to use only Centurion Monster or the Monster that SS to trigger the effect. 
8. Red Supernova Dragon does not banish itself for cost. If it is moved from the field before it can  resolve, the other card on the opponent's field will get banished, but it will not return during your next EP. Also, if you use this effect in your turn and it leave the field by it's own effect, it WILL SS itself back to the field during that same EP. This is not an activated effect, but unlike SP, and can trigger some effects.
9. Blue-Eyes Ultimate Spirit Dragon can SS from the GY, Centur-Ion Auxila or Crimson Dragon from the GY if either of them were Synchro Summoned and then sent to the GY.
10. Monsters summoned with the effect of Crimson Dragon are considered Synchro Summoned and can return to the field from GY/Banish if sent there from field.
11. Powersink Stone counts each time monster effects are activated by BOTH players in the turn and will affect both players once the first 2 monster effects resolves (anywhere). If there is a chain 5 with all of the links being monsters, when the chain is resolving, chain 5 will give a counter to Powersink Stone and chain 4 wil give the second counter to Powersink Stone , after that, if the other monster in the remaining chain links are on the field, their effect become negated. While Powersink Stone is in effect, neither player can attempt to activate monster effects on the field, example; Powersink Stone is live and the opponent has Haggard Lizardose on field, the would not be able to banish for cost using Haggard Lizardose effect, then have it resolve negated.
12. If during the EP, after Powersink Stone has removed its counters, 2 monster effects are activated, on resoloution, new counters will be placed on Powersink Stone and they will not be removed after, since removing the counters can only happen ONCE PER TURN. The counters will remain on Powersink Stone until the EP of the next turn, or if the card leaves the field.
13. Centur-Ion Phalanx is a trap card, hence, it's effect in the GY can be activated during the opponent's turn.