I'm sorry about this Flying type supporters, but let's take a look at the name here alone.
Glaceon, glaciers, ice type.
Leafeon, leaves, grass type.
Flareon, flares, fire type
Vaporeon, vapor, water type
Jolteon, jolts, electric type
Espeon, ESP, psychic type
Umbreon, umbra, dark type
Sylveon, sylph, relating to the forest? relating to pixies, and fairies? relating to the mineral silver?
But there's no meaning to Sylv that even remotely relates to flying types, unless you can show me one.
