A doubles power team carrying two Mega options, Mega Froslass and Mega Dragonite. Kingambit and Sneasler appear to secure critical-hit survivability with Chople Berry and Focus Sash respectively, while Garchomp seems to use Roseli Berry to answer Defense rank-up threats. Sneasler's acrobatic-style set may also function as a counter to the opponent's setup. Froslass and Basculegion both share the Ghost type, giving the team double resistance against Normal and Fighting pressure, and Kingambit's Steel typing rounds out the team's answer to Fairy threats. The exact movesets aren't public, but the item choices alone suggest a classic doubles balance build that grinds the match out while waiting for one big hit.
Mega Froslass (Froslassite): Likely the special attacker leaning on its Ice/Ghost dual typing.
Sneasler (Focus Sash): Probably a check-oriented pick, using Focus Sash to survive one hit on its Fighting/Poison frame.
Basculegion (Mystic Water): Presumed to be a burst-damage card leaning on Adaptability with a Water/Ghost bulk base.
Mega Dragonite (Dragoninite): Likely the team's main finisher, leveraging its Dragon/Flying dual power.
Garchomp (Roseli Berry): Appears to answer Defense rank-up threats while doubling as a Stealth Rock-style setter.
Kingambit (Chople Berry): Presumed to be a counter card that absorbs special hits while waiting to trigger Defiant.