Been having a lot of fun with this Sub + Toxic Kangaskhan in PU recently! EV spread gives it 101 Subs, and the Sub can't be broken by Regirock using Rock Slide, Jellicent using Scald, or Tangela using Giga Drain. Rest is dumped into attack with an Adamant nature.
https://pokepast.es/59893b2c71c0abd5