The Hisuian Samurott raid battle has arrived! For this battle, I used a Miraidon with 252 EVs in HP and Special Attack, Modest Nature, holding a Terrain Extender. Its moveset is Metal Sound, Parabolic Charge, and Electro Drift. To make this fight much easier, keep on resetting until you get an AI that uses a Pokemon with Intimidate and there is no ally with an Arboliva since you need Electric Terrain on the field.
The strategy is to start off with two Metal Sounds and hope both of them land. It should use Bulldoze to nearly or outright KO you. Once you return, use Parabolic Charge three times to charge your Tera Orb. With that done, a Tera boosted Electro Drift should take out Samurott's shield. As long as the time is above 50%, Samurott won't reset its stats, allowing you to use one more Electro Drift to get the KO.
Overall, took a bit to figure out the strategy since I tried out others like Grass Tera Manaphy and Bellibolt, but it seems this was the easiest strat to use.