UU. SD. Necrozma. if thats not enough how about defensive mega Altaria. This team is really solid atm with a lot of teams just being flat out walled by mega Alt and Necrozma being able to tear apart a majority of stall cores + they have really good synergy with gliscor. https://pokepast.es/82656907ecc74bcc
replay v stall - http://replay.pokemonshowdown.com/gen7uu-663566691
replay v stall - http://replay.pokemonshowdown.com/gen7uu-663566691