Grass types in general, especially ones that don't care about burns from Scald like Shaymin or Celebi. Ferrothorn walls Jellicent all day long and can strike back with Power Whip, though won't appreciate a burn. Rotom-W is another very common counter, resisting Scald and the occasional Ice Beam while obliterating Jellicent with STAB Thunder(bolt).
Tyranitar works quite nicely as a trapper with its very powerful Pursuit, but again, watch out for those burns...
Tyranitar works quite nicely as a trapper with its very powerful Pursuit, but again, watch out for those burns...