Xurkitree Raid Duo Guide

Primal Groudon beats everything else in this raid by a mile. It has huge average DPS and TDO that outright dwarfs everything, and it doesn't even have to worry about Grass Knot or Dazzling Gleam thanks to only taking neutral damage from the former, and resisting the latter. Add to this the fact that Primal Groudon boosts its entire team by simply existing, and it's pretty clear that Primal Groudon rules this raid with an iron claw.

Mega Garchomp has an amazing 3x resistance to Xurkitree's Electric Type moves, and it only takes neutral damage from Grass Knot, meaning it has the potential to outright dwarf everything not named Primal Groudon in this raid. However, it's also held back by a weakness to Dazzling Gleam. Regardless, this is a great Mega Evolution if Primal Groudon is unavailable for whatever reason.

Mega Swampert is a good backup Mega Evolution, but it's all-around worse than the above candidates. This is in part due to its weaker DPS, and in part due to its mere 1x resistance to Electric Type moves, and double-weakness to Grass Knot.

Shadow Excadrill is one of the best Ground Type attackers in the game, and it works fantastically here. It has the customary 2x resistance to Electric Type moves, but it also has a resistance to Dazzling Gleam while also taking neutral damage from Grass Knot. Add to this access to Scorching Sands for damage output, and you've got a genuinely great Pokemon.

Shadow Garchomp has all of the same advantages of Mega Garchomp, but weaker. However, the fact that it doesn't take up a Mega slot makes it very attractive for a raid slot here.

A simple bit of TM work can take an Ice Type Shadow Mamoswine and turn it into a genuinely good Ground Type attacker, one that can seriously hit Xurkitree hard. However, it's a bit frail despite its 2x resistance to Xurkitree's Electric Type moves, and it has to watch out for Grass Knot, and even Dazzling Gleam.

Groudon is a tanky, powerful attacker for this raid. It can rock Xurkitree's world with Precipice Blades, and takes its Electric Type moves like a champ. However, it's got the same issue as many of the other attackers on this list; watch out for Dazzling Gleam, and especially Grass Knot.

Shadow Rhyperior is a great attacker, but primarily when throwing rocks around. for Ground Type damage, it's definitely a decent option, but ironically it's potentially pretty glassy here despite its high bulk and double-resistance to Electric Type attacks. This is primarily  due to the fact that Grass Knot can deal huge damage to it in a single hit.

Just like Shadow Excadrill, the vanilla version has a great set of resistances and great power that makes it a very worthwhile option for this raid.

A power-house that trades some of its Electric resistance for neutral damage from Grass Knot. 

Most players probably still have a small army of Mamoswine from the days when it was one of the best Pokemon in the game, so the mere cost of a few TMs is all that it takes to bring them back for a new purpose.

Garchomp laughs at Xurkitree's Electric Type movesets and doesn't flinch when facing Grass Knot, but it doesn't appreciate Dazzling Gleam.

Identical to the Therian forme, but a bit weaker.

Garchomp, but a bit weaker.

Yes, Shadow Mewtwo can break through despite not having any Ground Type coverage.

Shadow Ursaluna may not have a Ground Type Fast move, but it's still worthwhile.

If you don't have Hidden Power Ground on your Shadow Regigigas, then it's not worth using here. It's not the best even with the right Hidden Power type, but it's useable.