I think Rock. Rock has type over flying. In Eeveelutions we always get them that have a type advantage over the other.
Flareon was weak to Vaporeon, Vaporeon was weak to Jolteon. Espeon was weak to Umbreon Leafeon was weak to Glaceon
So Slyveon is weak to Geodeon/Stoneon/Hardeon.....
If this is the case, I may use Rock Eevee instead of Sylveon.
But if its ground, Sylveom would type effec against it!
By the way, were any eeveelutions revealed not at the same time before? --- Chuck Finley is Forever! People that agree: 5. I believe in Jesus Christ as my Lord and Savior and am 100% proud of it. Yeah, it's hot, but it's a dry heat.
Not going to discuss what it means, but if we get a Fighting-type Eeveelution that isn't named Champeon, heads will roll. --- "Murder of the living is tragic, but murder of the idea is unforgivable." - Janus, speaker of the synod