I think the most (high tier) competitively viable Pokemon we've seen so far is Topu Koko. Electric Terrain is poor as move, but having it as a passive bonus that requires no input on your part is a tremendous boon. It has secondary STAB that can hit any Ground Types or Electric Immunities/Resistances that want to switch in on them.
But by far its biggest advantage is access to a move that most people aren't even aware of. Nature's Madness. According to everywhere its listed, it is a halved hp move in the vain of Super Fang. Now, if this thing is as fast as most Electric types tend to be, I think you can see where this is going. Even Walls and things that resist both its STAB won't be completely safe to switch in without the chance of being crippled in such a way. There really hasn't been a fast Offensive Poke with access to Super Fang (outside of Noivern), so this kind of train of thought is fairly new to wrap your head around. So long as it has the Speed and Sp Att to back it up, this thing could possibly end up triggering Smogon players enough to want an Ubers ban.
>>28385899When you really think about it, being able to Poison/Toxic Steel/Poison types doesn't really do much in the grand scheme of things, for OU at least. Most if not all Stall teams carry Status Clerics on them, and wouldn't it just be better to say Flamethrower/Fire Blast the Skarmory/Ferrothorn/Excadrill/Jirachi that's dumb enough to stay in/switch in on your face? It does do some good on non-stall teams, but there really isn't that many Steel types (and barely any Poison types) in OU. The only big thing I could see is being able to Toxic Heatrans.
Now... if this Salandit could get access to Toxic Spikes, and its Spikes continued to work under its Ability even after switching out, AND if they didn't go away when a Poison type hits them... then THAT would be revolutionary.