Do you guys think that the ability Corrosion (currently only Salandit is known to have it) will take effect only if directly poisoning the opponent via a status or offensive move with poisoning as a chance effect, or will a move like Toxic Spikes work as well? If setting up the Toxic Spikes would poison Steel and Poison types as well, then quite some strategies might be born from this.
Post-game. 3v3 singles. Imagine setting up Toxic Spikes while holding Focus Sash on a speed-invested Salandit. Set Toxic on the next turn (yeah, a hole is present here already, but meh). Then, switch onto Regenerator Slowbro w/ Leftovers. Protect to see the incoming move and get that Leftovers restore. Switch onto Regenerator Amoonguss w/ Black Sludge. Protect to see the incoming move and get that Black Sludge restore. Switch onto Slowbro and repeat the process.
Naturally, this set would have many holes, but would be fun nevertheless. No Sturdy Pokemon, hence one-hit KO moves would be getting in easily after a big streak. A Shadow Tag/Arena Trap opponent would prevent constant switches. Flying types, Pokemon with the Levitate ability or Air Balloon would resist the spikes entirely.
However, the switches, if they were to take place, would still be nice. Amoonguss can get super-effected by four types of moves, out of which Slowbro resists three of them while one deals neutral damage. The other way around, Slowbro can get super-effected by five types of moves out of which Amoonguss resists two and three deal neutral damage. Regarding Taunt, each Pokemon would still have an offensive move on them to at least get something in.
Yeah, I have too much time on my hands and speculate useless ideas... I actually wanted to realize something similar to this in XY, just having Shuckle with Toxic/Infestation instead of pure poison Corrosion. Shuckle's Sturdy can come in handy, though.
Salandit @ Focus Sash
Ability: Corrosion
Nature: Timid / Jolly (depends on the focus)
EVs: 252 HP / 6 Def or 6 SpD / 252 Spe
- Toxic Spikes
- Toxic
- Protect
- (Fire-type move)
Slowbro @ Leftovers
Ability: Regenerator
Nature: Calm
EVs: 252 HP / 126 Def / 6 SpA / 126 SpD
- Protect
- Toxic (to get it in if Salandit fails / Flying, Levitate, Air Balloon)
- Scald (if Salandit faints and you face Steel/Poison, hope for the burn)
- Psychic (STAB and poison coverage)
Amoonguss @ Black Sludge
Ability: Regenerator
Nature: Bold
EVs: 252 HP / 126 Def / 6 SpA / 126 SpD
- Protect
- Toxic (to get it in if Salandit fails / Flying, Levitate, Air Balloon)
- Spore (because 100% accuracy sleep)
- Giga Drain (combined with Spore when Amoonguss goes solo)
There it goes. Sturdy Shuckle is probably still a better choice. Plus there is also a combination of instead of having Regenerator Slowbro and Amoonguss, having Regenerator Audino and Reuniclus. There is the switch resist from Fighting types from Audino onto Reuniclus. The thing that this combo differs from the previous one is that Reuniclus can actually have Infestation. So, if Shuckle faints, it can take its place.
Though the biggest hole are really one-hit KO moves. The strategy is to stretch the battle for as long as needed for poison to take all of the opponents out. A longer battle means more chance for one-hit KO moves being successful if there is no Sturdy camper on the field. One Regenerator Pokemon is down and the other is rendered useless in this strategy. But yeah, still wanted to put this out there.