Just taking another stab at this thread!
Amaura @ Berry Juice
Ability: Refrigerate
Level: 5
EVs: 60 HP / 36 Def / 220 SpA / 12 SpD / 160 Spe
Modest Nature
- Rock Polish
- Hyper Voice
- Earth Power
- Substitute
Amaura is usually run with a Choice Scarf, but I didn't feel like being very standard, so yeah (Choice Scarf was already taken anyway.) Rock Polish helps give Amaura more speed than a Choice Scarf would give it. No unboosted pokemon can outspeed Amaura after one boost, even lots of Choice Scarf Pokemon that are just trying to hit 21 speed. Amaura is a great switch-in to Fletchling, so Amaura can take a hit, predict a switch, then Substitute. After getting a Sub Up, Amaura is free to set up a Rock Polish, and Demolish (it rhymes so I had to say it). Berry Juice Makes it so Amaura can either keep on producing Subsitutes, or so Amaura can act like an Agility Porygon, taking a hit, recovering, then boosting it's speed. Substitute is helpful to have, so that a Mach Punch From Timburr won't completely wreck Amaura.