Pokemon GO players will require skill to take down Team GO Rocket's leader Sierra. She can be very unpredictable in matches and has some versatile Pocket Monsters. Sierra's powerful team and her style of battle, where she utilizes all the options she has, make her a tough opponent.This December, Niantic is offering players an opportunity to challenge Sierra and earn exciting rewards. Trainers can collect Mysterious Components by winning against Team Go Rocket Grunts at invaded Pokestops. Acquiring six of these items will allow gamers to form a Rocket Radar that leads them to Team Go Rocket leaders. Below is a guide to winning against Sierra and her Pocket Monsters this December 2022.Note: This article reflects the writer's opinion.Guide to defeating Sierra in Pokemon GO in DecemberSierra isn't an easy opponent to fight against. She has seven versatile and powerful creatures. The entire battle is divided into three phases, and she poses an extreme threat in the last two. Infamous for switching between different monsters, she randomly picks her fighters during combat.You should keep a variety of Pocket Monsters with you while battling Sierra in Pokemon GO. It is also necessary to have extensive type-battle knowledge to win against this leader, and her capability to block Charged Attacks with special shields is also commendable.Despite Sierra's unpredictability in Pokemon GO, at the start of every match, she dispatches Sableye. This is Sierra’s current lineup:Phase One: SableyePhase Two: Cacturne/Flygon/HonchkrowPhase Three: Cradily/Houndoom/SnorlaxSierra has never gone down easily in Pokemon GO, and this won't change in December after she altered her lineup following the Team Go Rocket Takeover event in November.Counters for Team GO Rocket's Sierra in Pokemon GO⚡Yani⚡@YamperdazzleI kick in a doodle of Sierra for tonight :3 tomorrow i'll definitely work on some owed drawings! #pokemongo #leadersierra #teamgorocket103I kick in a doodle of Sierra for tonight :3 tomorrow i'll definitely work on some owed drawings! #pokemongo #leadersierra #teamgorocket https://t.co/AowPWOGyxPPhase 1 counters for Sableye in Pokemon GOGardevoir - Charm and Dazzling GleamAlakazam - Psycho Cut and Dazzling GleamGranbull - Charm and Play RoughXurkitree - Thunder Shock and Dazzling GleamTogekiss - Charm and Dazzling GleamZacian - Metal Claw and Play RoughPhase 2 counters in Pokemon GOMaster B@bpwilliams4New Gen 3! #PokemonGo #cacturne #gen3 #first #gen3live3New Gen 3! #PokemonGo #cacturne #gen3 #first #gen3live https://t.co/mwFMcXEKmsCounters for CacturnePheromosa - Bug Bite and Bug BuzzMoltres - Wing Attack and OverheatChandelure - Fire Spin and OverheatLucario - Counter and Aura SphereEscavalier - Bug Bite and MegahornYanmega - Bug Bite and Bug BuzzCounters for FlygonMewtwo - Psycho Cut and Ice BeamMamoswine - Powder Snow and AvalanceReshiram - Dragon Breath and Draco MeteorRayquaza - Dragon Tail and OutrageWeavile - Snarl and AvalancheGlaceon - Ice Shard and Ice BeamCounters for HonchkrowMamoswine - Powder Snow and AvalanceXurkitree - Thunder Shock and ThunderGalarian Standard Darmanitan - Ice Fang and AvalancheZacian - Quick Attack and Play RoughGardevoir - Charm and Dazzling GleamNormal Deoxys - Charge Beam and ThunderboltPhase 3 counters in Pokemon GOCounters for HoundoomConkeldurr - Counter and Dynamic PunchPheromosa - Low Kick and Focus BlastKyogre - Waterfall and Hydro PumpLucario - Counter and Aura SphereMachamp - Counter and Dynamic PunchRampardos - Smack Down and Rock SlideCounters for CradilyMamoswine - Powder Snow and AvalancheWeavile - Ice Shard and AvalancheGalarian Standard Darmanitan - Ice Fang and AvalanchePheromosa - Bug Bite and Bug BuzzZacian - Metal Claw and Iron HeadLucario - Bullet Punch and Aura SphereCounters for SnorlaxLucario - Counter and Aura SpherePheromosa - Low Kick and Focus BlastConkeldurr - Counter and Dynamic PunchMewtwo - Psycho Cut and Focus BlastTerrakion - Double Kick and Sacred SwordBreloom - Counter and Dynamic PunchThese creatures are some of the best ones to use when going against Sierra’s team. You should come up with a solid strategy while using any Pocket Monster from above. Utilize monsters that have STAB potential against whatever creatures she summons in Pokemon GO. Create several teams and use the best one; this strategy is sure to work against Sierra.