If you're talking about Impish nature,
The best suited Eeveelution is Umbreon.
The Umbreon you have there is almost competitive ready for a Trick Room Team (doubles) or a UU cleric in my opinion (only if it has Wish and/or Heal Bell though). It has some uselsess Special Attack IVs, and lacks Speed IVs, but that's about it. Those are quite minor details.
EVs: 252 HP / 164 Sp.Def / 92 Def
Hope I helped!