Timid Hidden Ability Eevee = Espeon. You could also do Timid Jolteon, but it's regularly obtained ability, Volt Absorb, is preferred over its Hidden Ability, Quick Feet.
Anyway, Espeon fits on to almost any team as it has the ability to reflect any non damaging moves including Stealth Rock, Thunder Wave, Leech Seed, Roar, etc. Espeon also fits in as an effective Dual Screener or even a Special Sweeper.
Espeon @ Light Clay
Trait: Magic Bounce
EVs: 252 HP / 4 SpA / 252 Spe
Timid Nature
- Reflect
- Light Screen
- Psychic
- Shadow Ball
This is the Dual Screen set which could fit onto any Hyper Offensive team as it helps any other Pokemon on your team to set up.. The Bulk allows you to tank hits better ensuring you put up screens and the Speed is so you can set up before you get hit. Psychic and Shadow Ball are for attacking when you're done screening.
Espeon @ Leftovers / Life Orb
Trait: Magic Bounce
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Psyshock / Psychic
- Hidden Power [Fire]
- Signal Beam / Grass Knot
- Baton Pass / Protect
This is a more B/W set, but it still could be effective. Psyshock or Psychic depending on whether you want to hit Physically or Specially frail Pokemon. Hidden Power [Fire] nails Scizor, Ferrothorn, and other common Steel threats. Signal Beam hits opposing Psychic types, but Grass Knot wrecks Bulky Waters. Baton Pass gets you away from Pursuit Trappers like Tyranitar safely and Protect helps you scout Choiced Pokemon.
You can twerk (tweak) these sets anyway you want or not even use Espeon. Just glad to help.