What deck did you play and why?
SPYRAL HERO DM. I played it because it was the last list I sent to Pandor from the previous tournament I played (a locals) and I didn't have the time to build a deck for the Cup. Oddly, I lost both matches I played on that locals with this deck, while I finished undefeated the YTC.
What tech choices did you play?
I decided to play Apprentice Illusion Magician and Dark Magician as my secondary Soul targets. I also played Magicalized Fusion with the intention of using DM and any Spellcaster from GY to make The Dark Magicians, but the idea did't work and I ended up siding out the card every match (I made TDM a few times with Polymerization, tho). I also played SPYRAL MISSION - Recapture because I think it's actually good, since it both protects the Sleeper Summon from some common backrow cards like Torrential Tribite or Bottomless Trap Hole and the effect to take control of a monster is not that rare with all the revival I was playing.
How did you prepare for the meta, and would you change anything going forward?
I'll 100% cut Magicalized for Oasis of Dragon Souls. I would also cut Apprentice since 2 Soul targets are enough. Also, with current proposed hits in mind, I would remove either Sleeper or Sleeper+Last Resort and Sunrise+Miracle Fusion, while going for 55 cards to keep Liquid Soldier.
How were your matchups?
Round 1 I played against Labcoat's Unchained Traptrix. It was very difficult because the Unchained big guy has non-targeting destruction, to the point I thought I was going to lose, but I managed to win since Sleeper is that strong.
Round 2 was against Jmax's Machines. Sleeper did most of the work here.
Round 3 vs WTrain's Unchained Shaddoll HERO. Opened really good both games. Won G1 thanks to Sleeper and G2 thanks to Fully Armed banishing both Construct and Winda.
Round 4 my opponent was Tactic Lu. They oppened badly both games.
Round 5 vs GuiltyGearxx's Chaos HERO Shaddoll. G1 I open badly and he opens really good so I lose. G2 I win thanks to Fully armed banishing Winda. G3 I summon Sleeper on my 1st turn and enters unninterrupted.
Top 8 was vs Spiderking on Synchro Traptrix. G1 I went for a T1 Sleeper that got BTH'd, but since I was ahead on resources and I had enough responses I managed to summon Sleeper a second time. G2 he opened badly and I opened Vyon.
Top 4 was vs Wtrain again. G1 I lose since he has more responses than I had starters. G2 I manage to outresource him. G3 it's literally Super Agent Beatdown, since he bricked and I summoned both Super Agent and Tough to use their effects and attacked.
Finals was vs Tactic Lu. G1 I summoned Sleeper but got outed, and in the end my opponent attacking with Sera into Tough (It was set to avoid the trap Holes) and equipping Fully armed to him won me the game. G2 I could play through the interruptions my opponent had and I negated his Vyon. In the end I won by attacking into a timelord and activating Forbidden Chalice on it for Exact lethal damage.