As long as Glaceon is your Active Pokémon, your opponent's Pokémon can't use any Poké-Powers.
Avalanche
70
Flip a coin. If heads, this attack does 20 damage to each of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
Put this card onto your Active Glaceon. Glaceon LV.X can use any attack, Poké-Power, or Poké-Body from its previous Level.