As long as Glaceon is your Active Pokémon, any damage done to your Pokémon by your opponent's attacks is reduced by 10 (after applying Weakness and Resistance).

Choose 1 of your opponent's Pokémon. This attack does 30 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

If your opponent doesn't discard a card from his or her hand, the Defending Pokémon is now Paralyzed.