Necrozma Dusk Mane is extremely bulky and if you put up evs in it it can almost always survive especially against super effective hits from primal groudon which after 2 switchins with rocks it kills with plus 2 attack with weakness policy
http://pokepast.es/41de7a3f5a35ca07
http://pokepast.es/41de7a3f5a35ca07