While Battle Styles will include all the things that define the Sword & Shield TCG series, such as VMAX cards, the big new mechanic is, as the name suggest, battle styles
Hydreigon EX, a Basic pokmon belonging to the Roaring Skies expansion, facilitates exactly this, being a useful and strong supporter for Dragon-type cards
And for finding people to play with, I highly recommend joining the Tricky Gym Discord (you can find link in Gym Leader Challenge website) where people interested in the format are playing games pretty much around the clock
Nymble From SV1a Triplet Beat [G] Thrust Kick: 30 damage
We decide to concede to our opponents and leave them to fight for first place
Suddenly, a board state that required 50 1/1s to attack a player for lethal damage might only require 20 or 30, putting a second or even third player in the crosshairs of the oncoming onslaught