>>53457886NTA, but I solo'd it with Miraidon.
Miraidon @ Terrain Extender
Ability: Hadron Engine
Tera Type: Electric
EVs: 252 HP / 252 SpA / 6 Def
Modest Nature
- Metal Sound
- Charge
- Electro Drift
- Parabolic Charge
Level 100. PP Ups on Electro Drift. Hyper Training its 3 non-perfect IVs.
Usage
- use Metal Sound 3 times
- use Charge
- use the "Go all out!" Cheer
- use Electric Drift
1 hit KO.
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If you're doing this solo like I did, it helps to have allies that have pokemon that can Intimidate or paralyze the owl.
If you're low on health, I'd also recommend using heal Cheers to heal your Miraidon instead of using Parabolic Charge.
The bad thing about Parabolic Charge is that it damages the owl. And if you damage it too much, it will get rid of the Metal Sound debuffs when it brings up its shield.
It will also start Sword Dancing when its shield is active. So it's best to destroy it in 1 hit with Electric Drift before it ever gets a chance to bring it up.