Clutched with Eelektross online alongside a stellar team of Bellibolts! The weird thing was the game kept crashing on turn 1, and I had to restart the whole Switch 2 to fix it. Hope this helps if anyone else runs into this issue.

My first thoughts are contrary Serperior or Eelektross depending on the cover move spread. Both have type advantage and gastro acid to neutralize sap sipper, and Eelektross has levitate to avoid ground cover moves