Eevee lution is a very strong and very fast deck. The most common version I've seen played is where you play all of them with HO-oh ex, lady outing etc. Start with an eevee, evolve on turn one to one of the eeveelutions from UF, and use the first attack to attach an extra enrgy and be hitting for 60 with a status effect on t2, it could be a very strong deck in the right hands
good luck,