Simple strategy here. Abuse Infernapes abilty to increase burn damage and hit good damage numbers.
Pokemon: 16
3x Entei GX 10/73
3x Infernape 23/156
1x Monferno 22/156
3x Chimchar 21/156
2x Salazzle 16/145
2x Salandit 15/145
2x Tapu Lele GX 60/145
Trainers: 31
4x Ultra Ball
4x Rare Candy
3x Professor Sycamore
3x Choice Band
3x N
3x Cynthia
2x Switch
2x Guzma
2x Field Blower
1x Lillie
1x Brigette
1x Skyla
1x Rescue Stretcher
1x Enhanced Hammer
Energy: 13
13x Fire Energy
Pokemon: 16
3x Entei GX 10/73
3x Infernape 23/156
1x Monferno 22/156
3x Chimchar 21/156
2x Salazzle 16/145
2x Salandit 15/145
2x Tapu Lele GX 60/145
Trainers: 31
4x Ultra Ball
4x Rare Candy
3x Professor Sycamore
3x Choice Band
3x N
3x Cynthia
2x Switch
2x Guzma
2x Field Blower
1x Lillie
1x Brigette
1x Skyla
1x Rescue Stretcher
1x Enhanced Hammer
Energy: 13
13x Fire Energy