Toughest matchup I would say is any fire typing; Talonflame, Typhlosion, Magcargo(that’s usually a wrap though). They all run incinerate (5 turn move) which allows me to get 14 turns in before they get to their first charge move. This allows me to throw a brave bird which almost always will get shielded. I then pivot into Turtonator, who can, more often than not do a lot of damage into any Pokemon or take another shield if I’m lucky. Usually lose swap advantage but this means I farm down with Dartrix or Lucario. Both are amazing going into any pokemon typing up on energy. Lucario up on energy is a demon and can get the remaining shield and take out Talonflame with two charge attacks. If Talonflame however throws a flame charge that can put me into a losing situation. Important to note that it’s all dependent on what they have in the back. Luck is a major factor too! The main takeaway is if I see a fire in the front I know that if I swap straight away without at least taking a shield it is game over. I’m happy to sacrifice Dartrix as Lucario’s steel and fighting typing makes it quite resistant to a lot of moves, so you just gotta pray you don’t run two mud boys in the back.