Jellicent said:
UU for GSC and ADV, and NU during DPP, Politoed became the face of a generation in BW when it gained Drizzle. So, what niches did this Pokemon best fill, either in higher or lower tiers, and what were its greatest sets and roles throughout the gens? Everything about this froggy is up for discussion this week~
Nice new title Jellicent n_n
Anyways as you already mentioned it was the mighty boon of Drizzle that had this now famous froggy start to see the light of day and run amok in OU. Weather was generally a gimmick up until this point (see - Sunny Day moltres/doom in GSC or Sandstorm lol), but with a method to invoke the roaring waters, blazing sunlight, and rough sand it jumped from obscurity to top usage. Even better was his ability to stand toe to toe with the other starters (ttar/9tales).
However as quickly as it rose, did ruleset limitations come into place. DrizzleSwim was considered too strong (as it was) and was subseqently banned.
However this was only a minor setback - keldeo, a new addition, became a monster. With blistering speeds outdoing 95% of relevant OU and SpA at a respectable amount this little pony ran amok. Fighting water coverage, life orb, and rain boosted hydro pumps are something no one wanted to take unless youre a
Jellicent hehe. Icy wind was there for nore utility options and helping to stop dragons!
Hell enough avout Keldeo, permarain did much more than just help him - our dear friend Ferrothorn now essentially lost a 4x weakness down to 2x thanks to fire being dampened. Ferro was able to switch into so many attacks with impunity and proceeded to litter your ass with hazards or leech stall for days.
But more than this, weather (in this case rain from poli) brought the "rise" of anti meta teams. Running a kingdra of your own to handle rain teams isnt the craziest thing around.
Now for the toed himself - respectable bulk let him throw around boosted scaldsand burn away. Protect for scouting and status stall. Toxic is toxic. Perish song to force switches to scare off incoming boosters. Mono water typing is strong and while not the gen4 lord, scizor was still around and poli could come into those locked BPs. More of a general overview im sure an experienced player will come in and talk about the origins of certain sets and spreads and their evolution over time.
E: I'm sure I missed a lot, but I just threw out what came to mind in terms of new threats because of poli, and not so much about him, hope it's relevant enough!