Sooo funny story I thought this was the "lure that threat" project, so I originally reserved darkest lariat bulu before realizing that this was Matchmaking
But then I realized that Bulu is actually a pretty cool partner with Mew.
Tapu Bulu @ Life Orb
Ability: Grassy Surge
EVs: 32 HP / 252 Atk / 224 Spe
- Swords Dance
- Horn Leech
- Close Combat
- Stone Edge
Now, mew struggles against knock-off which, bulu resist. Bulu might be a grass types, but it is NOT u-turn weak because fairy resisted them. I don't wanna go for a ghost type since that is double knock-off weak, and bulu here is an amazing wallbreaker. Bulu gainst access to swords dance, which allows it's attack stat to reach higher limits. It also has grassy surge + horn leech, making life orb comfortable to use. Mew also appreciates the extra healing, because before mew got the turn to set up it usually gets hit pretty hard. Mew struggles against phazers like Hippowdon and Toxapex. While bulu can't do much against Toxapex, it handles Hippowdon pretty well, despite being a physical attacker.
252+ Atk Life Orb Tapu Bulu Horn Leech vs. 252 HP / 248+ Def Hippowdon in Grassy Terrain: 296-351 (70.4 - 83.5%) -- guaranteed 2HKO after Grassy Terrain recovery
Tapu bulu absorbs Knock off rather fine, even without Life orb it can boost its attack stat with swords dance.
There's no doubt that there are going to be more Tapus and Fairy types later, so I'm lucky that I was online and quickly reserve this.
(Might edit this later)