Since this time only one pokemon was given to build the team around, it allowed for more freedom to use however I personally feel two part cores should be given as it makes the participant to actually think trying to incorporate the two pokemon in the team and it is more challenging and forces to be more creative with the core. That being said let me give you an overview of the team here.This team is built around the fat walls that normal mono has access to, capable of walling almost the entire metagame. The core of chansey+pory2+defensive staraptor provides the team which much needed support in the form of stealth rock,speed control in thunderwave, defog for hazard control and the ability to check threatening physical and special attackers for the team. Swellow acts as a special wall breaker/revenge killer in the team since it has a very good speed and diggersby with a choice band is the physical wall breaker with a priority move.Lastly, poryogn z fills in the team by fulfilling the role of a threatening special sweeper with its z conversion set.
Choice specs swellow is used here. Boomburst hits hard when powered with a specs and also helps in cleaning or revenge killing the opposing team. Heatwave is to help out vs steel types not named heatran and empoleon. U-turn allows it to safely pivot while also gaining momentum to the team. Lastly tailwind is a filler move in the last slot as you will be hitting boomburst most of the time however tailwind allows diggersby to sweep much easily. Swellow and diggersby wall break and soften the opposing team where as chansey+p2+staraptor provides necessary support and porygonz cleans! Also this is my 50th post, lol getting there xD
Standard diggersby set. With a choice band it has the ability to 2ko the entire metagame using the appropriate moves. Frustration is its main stab normal move that nukes neutral targets hard. Earthquake helps vs grounded steel types and fire punch allows diggersby to break through skarmory,scizor,ferrothorn and stuff. Quick attack lets diggersby revenge kill or pick off a weakened pokemon much easily.
Chansey provides the team with much appreciated hazard in the form of stealth rock. Thunder wave to catch pokemon on the switch . Seismictoss as an attacking move and consistent damage and lasty softboild for sustain which allows chansey to effectively check threatening special attackers to a normal team.
Porygon2 with an eviolite and max defense investment becomes very bulky capable of handling some of the biggest threats in the metagame such as scizor. As for the moves, foul play allows it to punish physical attackers that set up on it, Ice beam has good coverage helping against dragon and flying types mainly. Thunder wave to slow down threatening and fast pokemon and recover for sustain.
Defensive staraptor with intimidate provides the team the ability to pivot and force out on physical attackers and to clear off hazards with defog. Brave bird hits decently hard even when uninvested and U-turn is for momentum and doing chip damage on potential switch ins. Roost for longevity
Porygonz with z conversion acts as a powerful set up sweeper that can clean very easily late in the battle. Porygonz becomes a ghost type with z conversion since shadow ball is the first move of the set. With adaptability and +1 special attack few pokemon can safely switch into porygonz. Ice beam+thunderbolt provide very good coverage in conjuction with shadow ball.