Porygon Z

Porygon-Z is one of the strongest attackers in the tier, as both of its abilities can potentially boost the power of its moves, and it has a fantastic offensive movepool. Adaptability-boosted Tri Attack hammers many prominent defensive Pokemon such as Latias and Clefable, while its coverage options threaten walls that resist Normal, such as Jirachi and Skarmory. With Nasty Plot, Porygon-Z can 2HKO every Pokemon in the tier, even Blissey. Unfortunately, Porygon-Z struggles with just about everything else besides attacking, as its typing gives it no resistances besides its immunity to Ghost, and its frailty makes switching it in difficult. Porygon-Z especially struggles against offensive pressure from faster Pokemon such as Latias, Starmie, and Flygon, as it has average Speed and is easily at least 2HKOed by most common attacks. Faster Pokemon that resist or are immune to Normal, such as Choice Scarf Tyranitar, Choice Scarf Heatran, Jirachi, Gengar, and Scizor using Bullet Punch can switch into even boosted Tri Attack and KO or heavily damage Porygon-Z. Porygon-Z is also very weak to residual damage and status—it is vulnerable to sand and affected by all three entry hazards. Paralysis ruins its Speed, and burn and poison further expose its poor bulk. Porygon-Z can be effective against slower defensive teams as an offensive lead, but it generally is not recommended for use in DPP OU.