Is Mean Look together with Perish Song a good strategy?
Pokémon that can have that combination:
Gastly, Haunter, Gengar, Smoochum, Jynx, Murkrow, Honchkrow, Misdreavus, Mismagius
The Pokémon with Mean Look and Perish song can use moves like Substitute and Roost (Murkrow and Honchkrow) and items like Focus Sash to stay alive longer. You can survive 4 turns easily like that.