Notes & Combos
I love this deck!
It's a lot stronger going first than going 2nd, unless your handtraps carry you. It's also difficult to play through multiple interruptions sometimes.
Usually you should always at least end with Auxilla on the field + Field Spell + Counter Trap + Primera + other Centurion in backrow & Emeth in the Graveyard.
Traps: I prefer Awakening over Phalanx. Since Awakening needs a Centurion in the backrow, what you can do during your opponent's turn is: special summon your Centurion (not Primera) from the backrow, then use Emeth's GY effect to put it back into the backrow & special summon Emeth. You should have Primera & Emeth for your Synchro summon and one Centurion in the backrow for the counter traps.
Emergency Teleport: Is here to give Gamma more value. It kinda sucks though if all you have in hand is this and 4 handtraps. I might try out 2 Bonfire instead of this maybe, or just remove it completely.
Bystials: Bystials are a nice way to get additional Synchro summons (and of course can interrupt your opponent, there are a lot of Pile decks running around). You can use your Bystials & Ringowurm or Gamma (or even Primera) to make a level 8/10/12 Synchro. I have a replay where I Synchro Baldrake & Ringowurm into a levle 10 Synchro, then get the token and make Auxilla to get access to the Centurion cards.
Extra Deck: There are some flex spots here. I only have 1 Cosmic Blazar, so I run Shooting Quasar (which also is royal hehe) in addition to it. Supernova is really nice to have too. Omega never came up, I just wanted to have some options for level 8 Synchros.
Replays
720-525-407 I have quite a few Centurion replays public and update them somewhat regulary.
Later this week when I have the time I will record them and upload them to YouTube, since most people seem to be more interested in Yubel than Centurion ~ https://www.youtube.com/@Pumiirium