Hey, you're the one who listed Gliscor, it's not my fault for pointing out how obviously pointless mentioning him was.
Right because 3-4 waters (some of whom don't see much use [Lapras/most of the others you didn't bother listing]/have a potentially better Ability in Water Absorb [Vap/Lapras]/Regeneration [Mamanbou]) equals "...what with the bulky waters all getting Hydration now." Manaphy doesn't even count as it already had Hydration... So yeah, I'll repeat, the only big one that got it was Vaporeon.
You must be joking. You've got a Gorebyss in the rain and you're going to run Hydration over Swift Swim? What is with these rediculous examples?
Toxic isn't going anywhere I don't think (unless you're building/against a Rain team and even then that's only because Swift Swim sweepers kill too fast for Toxic to be effective anyway, not because Hydration ruins Toxic).
Mmhm bro, Gorebyss was a side-note, but if we're gonna go there:
Gorebyss @ Random Item
whatever nature + evs
Hydration
- Shell Break
- Rest
- Water STAB
- Move 4
with Drizzle support. Shell Break means Gorebyss already has +2 Speed with a base spd of like 54 iirc, not impressive in the least but enough to outrun anything except priority and scarf, and although Swift Swim lets it outrun everything short of priority, Hydration lets it use its impressive speed to unstatus and heal. Since nobody's touting this moveset, it has no relevance to the topic, but Hydration can exist. In any case, Omastar and Huntail both do Shell Break + Swift Swim better than Gorebyss.
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In a lot of cases Toxic does have no use. It lands on Cune, Cune rests. It lands on Pert, Pert might rest. It lands on Lappy, it could rest. Manaphy's allowed in until it's rebanned btw. It lands on Mamanbou or Milotic, it finally works. As of now, Burungeru users favor Recover too, so that's a third hit. Oh, Rotom-W before I forget.
Meanwhile, Mamanbou loses it's quick 'switch-in and KO' against Cloyster and Gyarados and Cloyster's within the range to start hurting Maman fairly quickly. If the team doesn't have a good priority shot hidden somewhere, Cloyster's gotten it's free setup. So no more using Maman vs. Cloyster or Gyara, heck Rest-Talk Gyara walls Toxic Mamanbou so hard it should get a Nobel Prize for excellence in the field, and can set up while doing it.
I don't get where you're trying to go. What are you trying to accomplish with Toxic? What's Toxic actually covering in UU or OU that doesn't often run Rest?