Triple Beam??
[Gen] 8 Anything Goes / [Gen 8] National Dex AG
Lunala @ Power Herb
Ability: Shadow Shield
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Meteor Beam
- Moongeist Beam
- Moonblast / Ice Beam
- Psyshock
Drat, Gen 8 awarded this bat with Meteor Beam, which allows it to boosts its SpA by 1 stage, thereby significantly making it harder to deal with.
Meteor Beam OHKOes all variants of Ho-Oh, 2HKOing Specially Defensive Yveltal as well as OHKOing Offensive Yveltal sets. Power Herb means Meteor Beam becomes a one-turn move. Psyshock deals with special walls, especially Chansey and Blissey. Moonblast and Ice Beam have same damage, but the later is preferred for Galar AG because Yveltal is the most common Dark-type that is weak to it, as well as OHKOing Zygarde without any boosts along with Groudon at +1 SpA. In case of being Nat Dex AG, prefer Moonblast because it hits DarkCeus along with Yveltal.
This set is able to handle Lunala's defensive checks pretty easily. For dealing with Calyrex-Shadow and other faster threats bar Yveltal, Sticky Webs are helpful. Ditto is a major weakness of this set, so remember to improof yourself well. Since Power Herb is a one-time use item, don't try to use it early. Instead, save it for later game when you have opposing walls enough damage for Lunala to break through team easily.