Synchro of Unity Competitive Version

Synchro Summon "Junk Speeder" and active "Junk Speeder"'s effect: Special Summon 1 level 3 Synchron monster from deck. (Alternative(ly) if "Revolution Synchron" on the hand Synchro Summon "Power Tool Dragon" using "Revolution Synchron" and level 4 monster on the field then Special Summon "Revolution Synchron" as Level 1 monster from the GY). 

Synchro Summon "Centur-Ion Primera Primus" either using "Junk Speeder" and level 3 Synchron Monster or "Power Tool Dragon" and level 1 tuner monster as Synchro Materials.

Activate "Centur-Ion Primera Primus"'s effect when Synchro Summoned: add "Emblema Oath" Spell Card from your Deck to your hand. 

Activate "Emblema Oath"'s effect: place "Centur-Ion Gargoyle II" from your Deck into your Spell & Trap Zone as a face-up Continuous Trap. 

Activate "Centur-Ion Gargoyle II"'s effect to Special Summon itself, then reduce its Level by 4. 

Synchro Summon "Centur-Ion Auxila" using "Centur-Ion Primera Primus" and "Centur-Ion Gargoyle II" as Synchro Materials. 

Activate "Centur-Ion Auxila"'s effect when Special Summoned: add "Stand Up Centur-Ion!" Field Spell Card from your Deck to your hand. 

Activate "Centur-Ion Gargoyle II"'s effect: if it was sent to the GY as Synchro Material, add it to your hand. 

Activate "Stand Up Centur-Ion!": send "Centur-Ion Gargoyle II" from your hand to the GY to place "Centur-Ion Trudea" from your Deck into your Spell & Trap Zone as a face-up Continuous Trap. 

Activate "Centur-Ion Trudea"'s effect to Special Summon itself. 

Activate "Centur-Ion Trudea" again: place itself and "Centur-Ion Primera" from your hand or Deck into your Spell & Trap Zones as face-up Continuous Traps. 

Activate "Centur-Ion Primera"'s effect to Special Summon itself. When Special Summoned, activate its effect to add "Wake Up Centur-Ion!" Quick-Play Spell from your Deck to your hand. 

Activate "Wake Up Centur-Ion!": declare Level 8, Special Summon 1 "Centur-Ion Token", then banish "Wake Up Centur-Ion!" from your GY to send "Centur-Ion Phalanx" from your Deck to the GY. 

Synchro Summon "Crimson Dragon" using "Centur-Ion Primera" and the "Centur-Ion Token" as Synchro Materials. 

Banish "Centur-Ion Phalanx" from your GY to target "Centur-Ion Primera Primus" in your GY; Special Summon "Centur-Ion Primera Primus" in Defense Position. 

Activate "Crimson Dragon"'s effect: target "Centur-Ion Auxila", return "Crimson Dragon" to the Extra Deck, then Synchro Summon "Cosmic Blazar Dragon" from the Extra Deck. 

End Turn. During the End Phase, activate "Centur-Ion Auxila"'s effect to place "Centur-Ion Gargoyle II", which is in your GY, into your Spell & Trap Zone as a face-up Continuous Trap. 

During Your Opponent’s Main Phase: 

Activate "Centur-Ion Gargoyle II"’s effect to Special Summon it and reduce its Level to 4. 

Trigger "Stand Up Centur-Ion!"’s effect: if a monster(s) is Special Summoned, immediately after this effect resolves, Synchro Summon 1 Synchro Monster. 

Use this to Synchro Summon "Crimson Dragon" using "Centur-Ion Primera Primus" and "Centur-Ion Gargoyle II" as Synchro Materials. 

Activate "Centur-Ion Gargoyle II"’s effect: if sent to the GY as Synchro Material, add it to your hand. 

Activate "Crimson Dragon"’s effect: target "Cosmic Blazar Dragon", return "Crimson Dragon" to the Extra Deck, then Synchro Summon either "Crystal Clear Wing Over Synchro Dragon" or "Stardust Sifr Divine Dragon" (depend on which deck the opponent use). 

During the End Phase, activate "Centur-Ion Auxila"’s effect to place "Centur-Ion Primera", which is in your GY, into your Spell & Trap Zone as a face-up Continuous Trap. 

Next Turn: 

Activate "Centur-Ion Primera"’s effect to Special Summon itself. 

Activate "Centur-Ion Gargoyle II" from your hand: send the face-up Continuous Trap "Centur-Ion Trudea" in your Spell & Trap Zone to the GY; Special Summon "Centur-Ion Gargoyle II" from your hand. 

Synchro Summon "Crimson Dragon" using "Centur-Ion Primera" and "Centur-Ion Gargoyle II" as Synchro Materials. 

(Optional) Activate "Centur-Ion Gargoyle II"’s effect: if sent to the GY as Synchro Material, add it to your hand. 

Activate "Crimson Dragon"’s effect: target "Cosmic Blazar Dragon", return "Crimson Dragon" to the Extra Deck, then Synchro Summon whichever monster you did not summon previously — "Crystal Clear Wing Over Synchro Dragon" or "Stardust Sifr Divine Dragon". 

✅ Final Board (if executed correctly): 

• Stardust Sifr Divine Dragon 

• Centur-Ion Auxila 

• Crystal Clear Wing Over Synchro Dragon 

• Cosmic Blazar Dragon 

• Stand Up Centur-Ion! (Field Spell)