What's your favorite deck that YOU have built

My favourite was my Mega-Charizard X ex + Dudunsparce deck from last rotation. I don't remember the exact list but the strategy was to set up Dunsparce and Charmander, then use seven to get secret box and TM evolution. The following turns I would use Dawn to get Dudunsparce (TEF), Mega-Charizard X ex, and Oricorio ex, or use Fire breather to get 7 fire energy. The deck also had Charizard ex (tera) and Volcanion (MEG) as alternative attackers, and Fezandipiti ex and Mew ex for support. I managed to win a couple of hobbies with it.

I've built a Greninja ex (30C)/ Mega Greninja ex (CRI) deck that plays Munkidori and also features Dudunsparce as a draw engine. With Greninja ex, you can land 1 hit KOs, even on their benched Pokemon, and Mega Greninja ex helps to make that possible. Mega Greninja is also a pretty solid attacker itself too.

been playing mew ex dragapult with 3 mew ex. Guy scooped when he couldn’t wellspring my dragapult.

PepeEvil looking:

the deck that starts the most fights is dark type with f-hitmonlee boosted by f-lucario