I don't think anybody's addressed this yet, but Glaceon-GX is bonkers in expanded! Shutting down BDIF Zoroark is awesome, as well as Lele, Shaymin, and having Eeveelutions at its side. It also has access to other old tools like Seismitoad-EX and Vileplume to force a stronger lock. Laserbank and Choice Band also bump the damage output to 150, making it 180 going back into your turn if they don't retreat or Acerola. If they DO manually retreat, they have a benched Mon with 150 damage on it, leaving it super prone to Glaceon's bench sniping. Here's a skeleton list I forged:
Pokemon:14
-1 Espeon DEX
-3 Virbank City Gym
-4 Hypnotoxic Laser
-1 Shadow Triad
-1 Ghetsis
+3 Rough Seas
+4 Aqua Patch
+1 Water Energy
+1 attacker
+1 Sycamore
Pokemon:14
- 4 Eevee SUM
- 3 Glaceon-GX
- 1 Espeon DEX
- 1 Flareon AOR
- 1 Seismitoad-EX
- 1 Tapu Koko
- 2 Tapu Lele-GX
- 1 Oricorio
- 3 Sycamore
- 2 N
- 1 Colress
- 1 Guzma
- 1 Ghetsis
- 1 Hex Maniac
- 1 Acerola
- 1 Shadow Triad
- 1 Comp. Search
- 3 Virbank City Gym
- 3 Choice Band
- 2 Float Stone
- 4 Ultra Ball
- 4 VS Seeker
- 4 Hypnotoxic Laser
- 1 Enhanced Hammer
- 1 Field Blower
- 1 Rescue Stretcher
- 4 DCE
- 7 Water
-1 Espeon DEX
-3 Virbank City Gym
-4 Hypnotoxic Laser
-1 Shadow Triad
-1 Ghetsis
+3 Rough Seas
+4 Aqua Patch
+1 Water Energy
+1 attacker
+1 Sycamore