Drifblim

It's drowzy in daytime, but flies off in the evening in big groups. No one knows where they go.

Expand (30): During your opponent's next turn, any damage done to Drifblim by attacks is reduced by 10 (after applying Weakness and Resistance).

Whirlwind (60): Your opponent switches the Defending Pokémon with 1 of his or her Benched Pokémon.