Now, I'm not sure if this would be considered a "shitty gimmick", but I've been having surprising success with this Jumpluff set.
Jumpluff
Leftovers
Ability: Infiltrator
EVs: 252HP/4Sp.Def/252Spd
Timid Nature
Infestation
Sleep Powder
Substitute
Leech Seed
It plays off of the typical Sub-Seed strategy, but takes it up a notch by trapping them in and making them unable to do anything to Jumpluff as it watches the opponent die slowly. With the buff to the in-between turn effects of Trapping moves, without Leftovers, a Pokemon will be losing 24% of its Health each turn (16% if Leftovers/Black Sludge is held). Sleep Clause doesn't come into affect since the Pokemon asleep is still in the battle. And, the nice thing about Infestation is that it won't be blocked since it has perfect accuracy and no Pokemon is immune to Bug.
Jumpluff also happens to be surprisingly bulky on the Special side, so its Sub can take a resisted hit or two before breaking. It also makes a good anti-Smeargle lead since its faster and immune to Spore.
http://replay.pokemonshowdown.com/oubeta-67968457
Just an example of it in action and taking down a Mega Lucario.
Granted, this is shut down hard by other Grass-types, and it doesn't exactly appreciate Ghost-types (as they can't be trapped) or those with Overcoat either, but it can be a pretty effective Wall breaker since it simply out-stalls pretty much everything to death. Even the likes of Gliscor, if they aren't packing Ice Fang, go down to it before long, and they aren't safe behind a Sub thanks to Infiltrator.
Gourgeist and Trevenant are hard counters to this set.
Edit:
http://replay.pokemonshowdown.com/oubeta-68121950
And now an example of it out-stalling a Blissey, despite the fact it can heal itself.