Rayquaza Duo Guide
Rayquaza finally descends from the ozone layer again, this time with a potential shiny. Despite the release of Outrage Salamence, Dialga, Palkia, and Garchomp, Rayquaza is still undisputedly the #1 Dragon. Furthermore, unlike Groudon and Kyogre, who are likely to be powercrept by Precipice Blades and Origin Pulse, Rayquaza's signature move, Dragon Ascent, is a Flying-type move - making Dragon Rayquaza one of the safest and most useful investments in the entire game.
Rayquaza is an extremely easy duo. Two teams of Level 25 0% IV Mamoswine are enough to duo against all movesets. There is no reason to fight Rayquaza in groups larger than 5.
That said, it's recommended to power up your Ice-types above Level 25, as Outrage Rayquaza is still deadly, and you may find yourself running out of healing items with underleveled Pokemon.
- Dragon Tail hits slightly harder than Air Slash and is generally a little harder to go against.
- Aerial Ace, although boosted by STAB, is more of an annoyance than an actual threat. Being a 3-bar move, Aerial Ace will be constantly spammed, but it doesn't hit too hard.
- Ancient Power isn't boosted by STAB and has the lowest raw power of any Rayquaza Charge Move. However, it will hurt quite a bit for any Ice-types that aren't Mamoswine or Piloswine.
- Outrage is brutal: base 110 power, boosted by STAB, and firing off frequently due to its 2-bar nature. That said, Mamoswine and the other Ice-types will still easily output enough damage to win, though it will be a bloody battle.
- Wind boosts the power of Rayquaza's Dragon- and Flying-type Moves. Despite harder-hitting attacks, the performance of Mamoswine and the Ice-type squad doesn't change too much, and the prospect of catching Weather-boosted Rayquazas is well worth the slight increase in the difficulty of the fight.
- Snow boosts the power of your Ice-type attacks. Under Snow, Mamoswine is almost capable of soloing Rayquaza. That's how easy this fight truly is.
Viable Counters
Minimum viable levels assume Best Friends, No Weather.
Italics indicate a Legacy move.
Use Ice-types. The Dragons and Rampardos sneak onto this list thanks to their insane Attack stats, but really, just use Ice-types and make your life easier. Make sure your Mamoswines have Ice-type moves and NOT Ground-type moves.
Again, use Ice-types, just powered up to higher levels this time. There's really not much to say; Mamoswine makes this fight trivially easy.