I made a mamoTTT team with Electrium Z zapdos, I'm quite new at teambuilding so feel free to change some stuff that doesn't work.
https://pokepast.es/eefa2cf672c96b54
252+ SpA Zapdos Gigavolt Havoc (175 BP) vs. 248 HP / 252+ SpD Toxapex: 342-404 (112.8 - 133.3%) -- guaranteed OHKO after Black Sludge recovery
252+ SpA Zapdos Gigavolt Havoc (175 BP) vs. 248 HP / 252+ SpD Celesteela: 438-516 (110.3 - 129.9%)
https://pokepast.es/eefa2cf672c96b54
252+ SpA Zapdos Gigavolt Havoc (175 BP) vs. 248 HP / 252+ SpD Toxapex: 342-404 (112.8 - 133.3%) -- guaranteed OHKO after Black Sludge recovery
252+ SpA Zapdos Gigavolt Havoc (175 BP) vs. 248 HP / 252+ SpD Celesteela: 438-516 (110.3 - 129.9%)