Froslass

Destiny Bond

Discard a Psychic Energy attached to Froslass. During your opponent's next turn, if Froslass would be Knocked Out by damage from an attack, the Attacking Pokémon is Knocked Out.

Icy Breath

40

The Defending Pokémon is now Asleep. Put 1 damage counter on each of your opponent's Benched Pokémon.