As long as Feraligatr ex is your Active Pokémon, each player's Pokémon (excluding Pokémon-ex) can't use any Poké-Powers or Poké-Bodies.

Does 10 damage to each of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Does 70 damage plus 10 more damage for each damage counter on the Defending Pokémon.

When Pokémon-ex has been Knocked Out, your opponent takes 2 Prize cards.