Is this Aggron + Medicham strategy even remotely viable?

Question

I came up with this combo while I was making a team in Showdown.
The team members I had were:
Aggron @ Choice Band
Ability: Rock Head
EVs: 248 HP / 252 Def / 8 SpD
Impish Nature
- Head Smash (Main Damage + Fighting Type Coverage)
- Double-Edge (Alternate Damage)
- Aqua Tail (Ground Type Coverage)
- Any Other Move (Maybe HP Grass?)

Medicham @ Focus Sash
Ability: Pure Power
EVs: 4 Atk / 252 SpD / 252 Spe
Jolly Nature
- Power Trick (Turn Aggron's great defense into an offensive force)
- Baton Pass (To pass Power Trick onto Aggron)
- High Jump Kick (If Damaging Moves are needed)
- Recover (So Medicham survives longer)

You start with Medicham and have him use Power Trick on the first turn (His Atk is higher than his Def so it is an increase to his defense). If the opponent uses a super effective or high damaging move, the Focus Sash allows you to survive until next turn. The next turn you Baton Pass the Power Trick to Aggron. Aggron has a Base Atk Stat of 110 so he will not be entirely defenseless if the opponent uses a Physical Attack. The next turn Aggron can use the great Base 504 Atk Stat with the 150 Power move Head Smash with STAB and a 1.5X Boost because of Choice Band (Altogether a Power of 337.5 with an Atk of 504). Because of Aggron's decent Defense and Special Defense Stats, He would be able to survive a few hits while causing major damage and let the rest of the team cleanup.

Also, I apologize if this is formatted incorrectly because this is my first post on here.

Edit: Here is the final team and my first battle with it: https://replay.pokemonshowdown.com/gen7anythinggoes-1138166163
Team: https://pokepast.es/97cddb2edd502214

Comments

Can you show me a replay where you try to use this strategy? I don't care about whether you win or lose.

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Isn’t Medicham’s defence higher since its Pure Power boost isn’t given to the defence stat?

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Here's a pretty bad example of it in use:
https://replay.pokemonshowdown.com/gen7anythinggoes-1138139927
Also, Burn destroys this strategy.

Edit: A better example: https://replay.pokemonshowdown.com/gen7anythinggoes-1138147289

Answer 1

This strategy is Luck dependant.
First thing that could go wrong is that Medicham gets hit and lives on the Sash but then gets hit by +1 or over priority, You could prevent this with Fairy Terrian.
Next thing that could go wrong is that they hit Aggron with a supereffective Special or Physical move then you are done for, Because of his low defenses if you power trick.
Next thing to go wrong is Taunt, If you use power trick and then get taunted and the foe Pokemon has enough bulk to live, you slowly get killed by HJK Missing.
Overall, very luck dependant
Hope this helped :)!
I used this on a showdown battle and in the replay, you can see what can go wrong.
https://replay.pokemonshowdown.com/gen7anythinggoes-1138130535

Comments

Thanks for the advice, I'm pretty sure Aggron would be able to survive a super effective physical move after Power Trick because 110 defense is still pretty good in combination with 248 Hp EVs.

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to add on to driftys answer

misty terrain doesn't prevent priority, that's psychic terrain
aggron doesn't have a good defensive typing so it probably doesn't matter if you invest in defenses
aggron is too slow to do much

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NebbyY I invested in Health for survival and Defense for Power Trick Attack. With Trick Room Healing Wish Jirachi or Celebi you can get Aggron better prepared for a second attack. You can kind of see the idea here but Aggron fainted so I used Medicham: https://replay.pokemonshowdown.com/gen7anythinggoes-1138147289. The team I used was:

Aggron @ Metronome  
Ability: Rock Head  
EVs: 248 HP / 252 Def / 8 SpD  
Impish Nature  
- Head Smash  
- Double-Edge  
- Aqua Tail  
- Protect  

Medicham @ Focus Sash  
Ability: Pure Power  
EVs: 4 Atk / 252 SpD / 252 Spe  
Jolly Nature  
- Baton Pass  
- Power Trick  
- High Jump Kick  
- Recover  

Jirachi @ Quick Claw  
Ability: Serene Grace  
EVs: 252 HP / 224 SpD / 32 Spe  
Sassy Nature  
IVs: 0 Atk  
- Healing Wish  
- Trick Room  
- Light Screen  
- Doom Desire  

Blaziken-Mega @ Blazikenite  
Ability: Speed Boost  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Brick Break  
- Flare Blitz  
- Superpower  
- Bulk Up  

Aggron had a metronome so it could make use of Protect, Jirachi is the Trick Room Healer for a second attack with Aggron and Mega Blazekin is a good cleaner. The other two members of the team could be a second Healer but with Aromatherapy to deal with Burns and Toxic (and heal Medicham for a safe Power Trick Pass or Blazekin for more damage) and a second Cleaner because Mega Blazekin can't really be expected to take down 2-4 opponents if Aggron faints.

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??? Metronome only affects attacking moves. Why do you even need Protect when you are going to get OHKO'd by High Jump Kick anyway because of the 4x weakness? If Protect isn't for High Jump Kick, why do you need it in singles?

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NebbyY with Choice Band I could literally never make use of Protect because then I would be stuck using it, People don't expect Metronome so if the see a 40% damage they think they can tank another hit. The Metronome boost is actually pretty good since the power added to Head Smash is substantial. Also, in one fight I tanked Mega Blazekin's High Jump Kick with roughly 20% HP remaining which I Full Restored with Jirachi and Celebi and got pretty close to winning.

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I didn't say to use Choice Band lol, I just don't see the point of using Protect.

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Not sure what else to do though.

Answer 2

There's no good reason to use 2 Pokemon and 2 status moves. With only 1 Pokemon and 1 status move, you can get a higher number in every stat. Specifically, its physical attack stat becomes 826 after one swords dance.

Necrozma-dusk-mane @ Solgalium Z
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly nature
- swords dance
- sunsteel strike
- photon geyser
- earthquake

source