How can I make this better? I've tried putting Taunt on Whimsicott and I have replaced Garchomp with Heatran/Scizor/Heracross/Aggron/Azumarill/Aegislash. Without the Toxic/Leech Seed combo I am unable to kill the stronger bulky Pokemon and they take out Huntail before I can Baton Pass. Shell Smash M.Garchomp works out a lot better than those Pokemon listed above.
Whimsicott w/Focus Sash
- Encore
- Memento
- Toxic
- Leech Seed
Huntail w/White Herb
- Waterfall
- Body Slam
- Shell Smash
- Baton Pass
M.Garchomp
- Dragon Claw
- Earthquake
- Stone Edge
- Flamethrower
There's no need for Focus Sash on Whimsicott, as it can take a physical hit or two with investment in Defense:
-Encore
-U-turn
-Memento
-Stun Spore/Tailwind
Nature: Bold
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers
Ability: Prankster
Seriously, use Gorebyss over Huntail as a Shell Smash passer; it has better offensive presence (higher Special Attack than Huntail's Attack, as well as stronger Water STABs in Surf):
-Shell Smash
-Hydro Pump/Surf
-Ice Beam/Substitute
-Baton Pass
Nature: Timid
EVs: 252 SAtk/4 SDef/252 Spe
Item: White Herb/Lum Berry
Ability: Swift Swim
Mega Garchomp is meant for wall breaking purposes. Your current set doesn't make the most of that fact, as Dragon Claw and Flamethrower lack power compared to Draco Meteor and Fire Blast:
-Draco Meteor
-Earthquake
-Stone Edge
-Fire Blast
Nature: Naughty
EVs: 4 Atk/252 SAtk/252 Spe
Item: Garchompite
Take note that Mega Garchomp is best used with Tyranitar or Hippowdon, as Sand Force is useless outside of sandstorm. Black Kyurem is the next best thing:
-Ice Beam
-Fusion Bolt
-Earth Power
-Outrage/Roost
Nature: Mild/Rash
EVs: 56 Atk/252 SAtk/200 Spe
Item: Life Orb
or
-Outrage
-Ice Beam
-Fusion Bolt
-Iron Head/Earth Power/Dragon Claw
Nature: Naughty/Lonely
EVs: 252 Atk/56 SAtk/200 Spe
Item: Life Orb
or
-Substitute
-Ice Beam
-Fusion Bolt
-Earth Power
Nature: Mild/Rash
EVs: 56 HP/252 SAtk/200 Spe
Item: Leftovers
or
-Outrage
-Dragon Claw
-Fusion Bolt
-Ice Beam/Iron Head
Nature: Naughty/Naive
EVs: 252 Atk/32 SAtk/224 Spe
Item: Choice Scarf
or
-Outrage
-Ice Beam
-Fusion Bolt
-Iron Head/Dragon Claw
Nature: Naughty/Naive
EVs: 252 Atk/56 SAtk/200 Spe
Item: Choice Band