Here's the Shuckle set I've been using to great success:
Shuckle @ Mental Herb
Sturdy / Impish
252 HP / 252 SpD / 6 Def
Sticky Web
Stealth Rocks
Encore
Infestation
My friend, who showed me the set, uses a Impish 252 HP / 252 Def / 6 SpD set for pure defensive instead of mixed but it's whatever. The only thing that can stop this guy from setting up hazards is Sleep and he's great at taking the sleep (since you don't want anything else on your team to take it). I've been using it on a HO team and it's worked wonderfully. Depending on what the opponent has, you choose which hazard to set up first (either rocks or webs). If you live past that, you can get some serious shenanigans and is the real reason to use this over Deo-D for some HO teams. With Infestation and Encore, he brings in Set-Up sweepers like a fucking champ. Lock the opponent into EQ or Tbolt, free CM for Landorus-I. They defog you? Bring in Bisharp. Is that Latios trying to kill you with a dragon move? Well, free SDs for Mega Mawile or CMs for Clefable. I could go on but this does it's fucking job. Infestation is great at breaking balloons. Also, Sticky Web pretty much Neuters Scarf pokemon like Garchomp and Excadrill for free (as well all know what a menace they are) allowing great sweeping opportunities for something like Greninja (who now won't have to worry about random scarf pokemon taking him out). It's versatile in what it does and I feel is the 3rd best hazard setter after both Deoxys forms and would be used more if those two weren't so god damn good at their jobs and Shuckle wasn't well...Shuckle. Try it out, it'll fit on pretty much any team with a set-up sweeper who only needs 1 turn to win.