Porygon-Z @ Life Orb | Download
Modest / Timid | 252 SpA / 4 SpD / 252 Spe | 0 Atk
Tri Attack | Thunderbolt | Ice Beam | Hidden Power Fire / Agility
Say hello to cyber duck, once cyber prism duck in Porygon, and and cyber rod duck in Porgon2, Porygon-Z is probably the most forgotten Pokemon in the whole game. Seriously, Burmy comes faster to my mind then this duck. Ducks aside, this duck (-__-) is an excellent wall-breaker in the current metagame, since it strikes many Pokemon for super-effective damage; moreover, Heatran and Jirachi are probably the only things that can take this set rather well. Tri Attack is an excellent STAB move, since when packed by LO, Modest Nature, and +1 SpA, it destroys most of the metagame. Just like Genesect, most of the OU metagame grant Porygon-Z and +1 SpA boost, making Download a threat to watch out for. Thunderbolt and Ice Beam provide BoltBeam coverage which is good enough to defeat bulky Water-types and Ground-types such as Jellicent and Hippowdon, respectively. Hidden Power [Fire] rounds off Porygon-Z's infamous wall-breaking capabilities by striking Ferrothorn and Forretress, two common Pokemon in the metagame. Agility is an option over Hidden Power [Fire] if striking Ferrothorn and Forretress isn't important, and allows to let Porygon late-game sweep with Breloom and Conkeldurr out of the way (Scizor's CB Bullet Punch does 77% max iirc). Choice Specs may seem appealing, but honestly, your boosting something with 405 SpA that gets a +1 SpA most of the times, so I don't see the point. I've ran Nasty Plot with Agility, since Thunderbolt and Ice Beam destroy most of he metagame, but I find it hard to get both boosts, and you'll be lucky to get an Agility up, lol. 0 Atk IVs are for stupid confusion and Foul Play hax. Modest is the preferred nature, since it lets it nuke most of the metagame with Tri Attack, but Timid cool I guess if you wanna outpace Gyarados and Dragonite, and neutral 100s (noone uses them today), so I find Modest superior. Also, Porygon-Z is amazing, so it can use Thunder on rain team which wrecks, and hits the same amount of damage Tri Attack has, with a 30% paralysis chance. Hidden Power [Fire] is also much better since it OHKOes stuff like Bronzong at +1. I have calculations of Porygon-Z's damage output, and obviously it'll need +1, but it gets it against most of the metagame as I said previously. I can write more, but they are all 4x weak like Landorus-T, and Tri Attack 2HKOes this whole list that isn't unresisted. Stealth Rock is a must for this set, as it extends it's wall-breaking set and Spikes is even better, especially with Agility. The duck's debut has now ended, and no, this is not a gimmick. Hopefully this thing get Fire Blast, and hopefully U-turn, so Scarf is more viable, but until then, it's a niche Pokemon as emergency sweeper, but great wall-breaker. Also, give this duck Hyper Voice. Adapadability can be used I guess, but I like Download more since it boost Thunderbolt, Hidden Power Fire, and Ice Beam. Psyshock is the most other viable option since it strikes Chansey for the 2HKO > Agility / Hidden Power [Fire], but I never liked it due to it's redundant coverage. Recover is cool, but like Agility, it takes some time to use.
+1 252+ SpA Life Orb Porygon-Z Thunderbolt vs. 252 HP / 0 SpD Politoed: 455-538 (118.48 - 140.1%) -- guaranteed OHKO
+1 252+ SpA Life Orb Porygon-Z Hidden Power Fire vs. 252 HP / 88+ SpD Bronzong: 250-294 (73.96 - 86.98%) -- guaranteed 2HKO
+1 252+ SpA Life Orb Porygon-Z Ice Beam vs. 252 HP / 236+ SpD Celebi: 333-393 (82.42 - 97.27%) -- 62.5% chance to OHKO after Stealth Rock
+1 252+ SpA Life Orb Porygon-Z Hidden Power Fire vs. 252 HP / 168 SpD Ferrothorn: 442-520 (125.56 - 147.72%) -- guaranteed OHKO
+1 252+ SpA Life Orb Porygon-Z Tri Attack vs. 232 HP / 0 SpD Rotom-W: 273-321 (91.3 - 107.35%) -- guaranteed OHKO after Stealth Rock
+1 252+ SpA Life Orb Porygon-Z Thunderbolt vs. 248 HP / 0 SpD Vaporeon: 476-562 (102.8 - 121.38%) -- guaranteed OHKO
+1 252+ SpA Life Orb Porygon-Z Tri Attack vs. 252 HP / 172+ SpD Gastrodon: 253-300 (59.38 - 70.42%) -- guaranteed 2HKO -- Gastrodon rarely run Specially Defensive nowadays
+1 252+ SpA Life Orb Porygon-Z Hidden Power Fire vs. 252 HP / 236+ SpD Jirachi: 247-291 (61.13 - 72.02%) -- guaranteed 2HKO
+1 252+ SpA Life Orb Porygon-Z Ice Beam vs. 252 HP / 252+ SpD Multiscale Dragonite: 655-775 (84.45 - 100.38%) -- guaranteed OHKO
+1 252+ SpA Life Orb Porygon-Z Tri Attack vs. 0 HP / 76 SpD Wobbuffet: 398-468 (76.39 - 89.82%) -- 18.75% chance to OHKO after Stealth Rock
Note that Porygon-Z should be focused on getting in on something it gets a +1 SpA, and also forces it out, since you won't get +1 on stuff like Jirachi, for example.