Actually, there are 3 annoying decks : Ancient Gear Turbo, which can be easily counter depending on the cards you have. To win against it, I add two Power of the Guardians in my deck. It enables me to reach 3000+ with Shi-En. I made to DNV 20 with only one Shi-En and 2 Kizan, thanks to it. They savec my life a lot, and your opponent is not prepare to meet them in a 6S deck. Yubel is annoying if your opponent doesn't brick... and as always, they never brick. Again, Power of the Guardian helped me a lot against destruction and Nephtys. So do Rihan, Enishi and Dual Wields. But you have to be prepared really fast if Nephtys is on the field on turn 1 or 2... And now, in regular PVP, I'm struggling against Weevil + Lava Golem + Amazoness (they're back, thanks to Koaki nerf). They can clog your field with the Parasite (it changes the type of your monsters --> Shi-En can't be summoned) and Lava Golem + 3 Trap Holes + 3 Canadia. And of course, Dual Wields can't be used because you have 2 or 3 monsters on the field.