I've never liked Bibarel, but I think that Sketching recovery is going to be highly appreciated in this meta. People have noted the possibilities of Nuzzle, Will-O-Wisp and Sticky Web on Tank Garchomp, while Dragon Dance and Thousand Arrows would massively increase offensive Garchomp's potential, but I still think I would prefer Sketching a recovery move.
Garchomp @ Rocky Helmet
Ability: Rough Skin
EVs: 252 HP / 164 Def / 76 SpD / 16 Spe
Impish Nature
- Stealth Rock
- Earthquake
- Dragon Tail / Stone Edge / Fire Blast / Toxic
-
Milk Drink
This changes Garchomp's role pretty hugely - it's not merely TankChomp, but now could be considered a wall. I can't even begin to describe the numerous OU battles where, after switching into a powerful M-Metagross' Meteor Mash, Talonflame's Brave Bird, M-Lopunny's Return or Bisharp's Iron Head, that I wanted to heal Garchomp. And that's exactly what this metagame gives it!