Why is Chestnught taboo in Competitive?
Pros: It has a nice typing offensively, hitting the likes of Bulky Waters and multiple Steel types, and even defensively, as its one of the few Pokemon to resist EdgeQuake. Bulletproof is a great ability that shrugs off the Sludge Bomb that seems to be growing in popularity and other moves like Focus Blast and Gyro Ball. It gets Leech Seed, Synthesis, Spikes, and Spiky Shield, all viable and very useful moves.
Cons: Breloom outclasses, not entirely, but it gets Mach Punch and Spore. Its abilities seem a bit more applicable with Poison Heal and Technician. The worst part about it (which is why you also are seeing less of Breloom) is Talonflame. Gale Wings Brave Bird will wreck it, but so can Flare Blitz and Acrobatics.
Just some sets of Chesnaught:
Chesnaught @ Leftovers
Ability: Bulletproof
EVs: 252 HP / 252 Def / 4 Atk
Impish Nature
- Spikes
- Synthesis
- Hammer Arm
- Wood Hammer
I've been using this set lately and it has proven as a key defensive pivot. Spikes for hazards, Synthesis for healing and then Dual STAB Hammer Arm + Wood Hammer.
Chesnaught (M) @ Leftovers
Trait: Bulletproof
EVs: 252 HP / 252 Def / 4 SDef
Impish Nature (+Def, -SAtk)
- Substitute
- Leech Seed
- Spiky Shield
- Seed Bomb
This is your SubSeed set. Leech Seed saps health, Substitute + Spiky Shield stall out the health and Wood Hammer is your lone attack.
~From Mewderator
Chesnaught@ Choice Band
Ability: Overgrow
Nature: Adamant
EVs: 252 hp 252 atk 4 sdef
-Wood Hammer/Seed Bomb
-Hammer Arm/Power Up Punch
-Stone Edge
-Earthquake
This set is meant to abuse Chesnaught's base 107 attack. First you have a a choice between STAB attacks. Secondly, you can choose between a powerful fighting STAB or a weaker one for to set up later. EdgeQuake is the ultimate attacking duo, resisted by few.
~From Miror Bro
Anyway, I feel like you will see Chesnaught in UU and will fit there well. I honestly can't wait to see where it goes because it is a very interesting Pokemon. It'll never get a bye into OU with Talonflame roaming however.