Saw your UU team, have played it 10+ times on the ladder easily since, 5 in a row at one stage. Haven't lost to it yet. Hit top 5 with this team easily. Teams pretty self explanatory, prim 1v6s most trick room builds, nihilego removes hippo on sand teams so zolt isn't too much an issue, haven't lost to sand.
https://pokepast.es/b29ba8a26d1a56bd