I mean, both latias and talon are common / good enough to be on the viability rankings and generally just stuff you should take into account when building.OK I understand that I suffer from the syndrome of making sets and posting them, but found/created some really good sets.
Latias (F) @ Leftovers
Ability: Stamina
EVs: 252 HP / 4 Def / 252 SpA
Modest Nature
IVs: 0 Atk
- Calm Mind
- Stored Power
- Roost
- Dragon Pulse
Admitting it, it's not a set created by me, but saw it on ladder and revamped it a bit. This set here is an offensive one for a reason which I will explain later, but you can change the 252 SpA to Def and Bold Nature. Every physical attack will deal less damage with each turn, and will boost Stored Power's BP. Calm Mind boosts the SpD and SpA, with which you boost Stored Power yet again, and you are preparing it to hit like a rocket launcher. Roost here is good if a Pokemon tries to wear you off. After few boosts on both defenses, virtually only crits and Unaware Pokemon can touch this thing. However, they don't appreciate taking on a high based STAB move along with a 252+ SpA. Finally, Dragon Pulse is to hit Dark-type Pokemon, which are imunne to Stored Power.
Talonflame @ Life Orb
Ability: Magic Guard
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Swords Dance
- Flare Blitz
- Brave Bird
- Flame Charge
You probably have thought of this set, but I never copied it or revamped it from anything. Talonflame is unique in the meta here because it gets 2 powerful STAB recoil moves and a top tier speed, being able to outspeed Specs Noivern. Now with Magic Guard, not only Tflame doesn't fear Life Orb + recoil moves, but it also easily switches into any hazard moves. The Flame Charge here seems strange. Flame Charge boosts your speed and therefore allows you to outspeed things like Tapu Koko. This set has some problems with Rock-type Pokemon, so you can swap Flame Charge with some memes like Steel Wing or something. Just run it with something that either covers the faster threats or Rock-type Pokemon.
Mew @ Light Clay
Ability: Snow Warning
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Aurora Veil
- Light Screen
- Reflect
- Taunt
This set is a really defensive based one. Being able to set all 3 known screens, this thing can drastically boost the whole team's Defense. The thing that is really really good about this set is that it gives perfect opportunities for setters to set. The offensive Latias set I posted earlier exactly goes very well with this set. Brick Break memes, Psychic Fangs, and Defog might be problems, but there's the reason I run Taunt for Defog. Keep it away from Taunt as well (unless the opponent is slower and you predict it). The reason I run this over any Ice-type Pokemon is that this thing is the most balanced Pokemon from the 3 screens learners in terms of Defense + Access to Taunt, something which Cryogonal doesn't get access to. (Also Jynx has a horrible Defense stat lol).
Stamina Latias is a set that I've never used, because I think it's pretty bad. It's super passive and does like no initial damage so it's not too hard for offence to just overpower it, and it's just useless against balance or stall. Just like status it or smt, it's quite easy.
Talon is a pretty good mon in the meta, you definitely need roost on that if you want to be able to setup on anything or just generally be more reliable. I personally think setup / taunt / roost / brave bird is the best set because it does about as well against any offence team, but is a pain to deal with for more generic balance builds or stall. Talon's defensive typing is actually quite good and without roost you're missing on a ton of setup opportunities.
That mew could probably work with only aurora veil / taunt / recovery and a pivot move, screens + veil takes a lot of time and is a bit overkill, with a pivot move you can keep momentum and safely send in w/e setup sweeper you want.