Just have fun
Gholdengo is perfect for this one. I came in with gholdengo and the other people in the raid brought chi-yu skeledirge and ceruledge. I used one metal sound and and a atk cheer and the chi-yu killed it in one blow no shield or anythingGuessing Unaware Skeldirge would be great against it? You ignore the Attack boosts and is immune or resists all its moves. Second best may be Gholdengo who also hard walls its move set (though can’t ignore the Attack boosts).