Nickname: I would nickname her Tia because it has tia in Latias.
Choice Scarf
Ability: Levitate
EVs: 252 Sp.Att, 252 Sp. Def, 6 Def
Nature: Timid
-Draco Meteor / Dragon Pulse
-Thunderbolt
-Surf
-Trick / Hidden Power Fire
Look familiar? this is basicly the Specs set, except with a Choice Scarf. Why, you may ask? Latias has a base 110 speed, and coupled with a Choice Scarf, Latias outspeeds +1 Salamence, +1 Gyarados and Scarf Flygon, all dangerous Pokemon that can destroy teams. What's better is that latias OHKOs all three of those Pokemon, while still being a major threat. Surf again is used for Heatran, and Trick may be used for crippling the terrible Blissey. But of course, you may use Hidden Power to hurt Scizor. But Magnezone's useful for that. This set is beaten easily by Tyranitar, so be sure to include a counter.
The EVs are use so that Latias can have more Sp. Atk. The reason why having the EVs on Sp. Def instead of Speed is because of the Choice Scarf. Choice Scarf raises the holder's speed by 50%, which is enough speed to go fast. And Sp. Def allows itself to last longer from other Dragon type Sp. Attack moves. Then, the next turn when you raise speed from your Choice Scarf, use Draco Meteor on a dragon Pokemon like Salamence, or Thunderbolt on a Gyarados, or use Surf on Heatran to KO them because you are fast with your Choice Scarf and with your Sp. Atk. That is why you raise 252 Sp. Def instead of Speed.
Choice Scarf
Ability: Levitate
EVs: 252 Sp.Att, 252 Sp. Def, 6 Def
Nature: Timid
-Draco Meteor / Dragon Pulse
-Thunderbolt
-Surf
-Trick / Hidden Power Fire
Look familiar? this is basicly the Specs set, except with a Choice Scarf. Why, you may ask? Latias has a base 110 speed, and coupled with a Choice Scarf, Latias outspeeds +1 Salamence, +1 Gyarados and Scarf Flygon, all dangerous Pokemon that can destroy teams. What's better is that latias OHKOs all three of those Pokemon, while still being a major threat. Surf again is used for Heatran, and Trick may be used for crippling the terrible Blissey. But of course, you may use Hidden Power to hurt Scizor. But Magnezone's useful for that. This set is beaten easily by Tyranitar, so be sure to include a counter.
The EVs are use so that Latias can have more Sp. Atk. The reason why having the EVs on Sp. Def instead of Speed is because of the Choice Scarf. Choice Scarf raises the holder's speed by 50%, which is enough speed to go fast. And Sp. Def allows itself to last longer from other Dragon type Sp. Attack moves. Then, the next turn when you raise speed from your Choice Scarf, use Draco Meteor on a dragon Pokemon like Salamence, or Thunderbolt on a Gyarados, or use Surf on Heatran to KO them because you are fast with your Choice Scarf and with your Sp. Atk. That is why you raise 252 Sp. Def instead of Speed.