Get ready to get either Glaceon or Leafeon! First, get Eevee from Bebe after you get the National Dex. Then go to either Route 217 (if Glaceon) or Eterna Forest (if Glaceon). Then in Route 217 and Eterna Forest, you shoud find a wierd rock. Then level up Eevee near the rock in Eterna Forest for Leafeon or level up Eevee near the rock in Route 217 for Glaceon.