Sudowoodo MT 35

If Bonsly is anywhere under Sudowoodo, flip a coin. If heads, prevent all effects of an attack, including damage, done to Sudowoodo during your opponent's next turn.

Your opponent switches the Defending Pokémon with 1 of his or her Benched Pokémon. The new Defending Pokémon can't retreat during your opponent's next turn.