I have been a Greavard doubter for a fairly long time, because, at first glance, it does not seem to do anything besides spinblock very well, and even then, it does not really like Knock Off or Spore from Toedscool. However, after testing the team, its other strengths became apparent to me: handy priority in Shadow Sneak and great bulk to handle some boosted sweepers, and access to Fang moves to hit the most common Hazard Removal options. I chose to use Tera Water and Thunder Fangs in order to annoy not only Quaxly, but also Rain teams, while Sleep Talk allows to soak Sleep from Toedscool while still not remaining passive, especially with Ice Fang. I figured I would not use Stomping Tantrum and chip steels another way, while Rest is not used because during testing I have never found any real need to click the move.
Enter Greavard's obvious partner in crime: Glimmet! With Rufflet departing, I think that Spikes are more important to set than Stealth Rocks, though the latter still has merits in the Larvesta matchup notably, which is why Pawniard carries it. Glimmet's role is to barf up Spikes and Toxic Spikes on the terrain to cripple the opposing team, while Greavard makes those unspinnable. This Glimmet set is equipped with a surprise Fighting Tera Type + Tera Blast combo to catch Pawniard off-guard to facilitate sweeps from Girafarig. Glimmet also can just often eat a hit and respond with a strong STAB off 20 Special Attack!
I just referred to my building 101 for the next member. I needed something that was able to outspeed Girafarig to revenge kill a weakened one. I also wanted something with a pivot move. We were still in the Rufflet meta but I figured it would be banned shortly so it was out of question. The next best things were Larvesta and Mankey. The former's weakness to rocks and matchup dependency made me choose the latter. Mankey sports the highest Speed out of all Choice Scarfers, and takes great advantage of Spikes support to fire off strong Attacks. I attached Vital Spirit to Mankey, as it can slightly help pivot around Toedscool if you're in a dire situation or do not want something else being asleep. Pawniard also already packs Defiant so another Defiant Pokémon felt unneeded.
You will rarely Terastallize Mankey, but I found that when you do, you either abuse Tera Fighting Close Combats or Tera Dark's Psychic immunity to brain Speed-boosted Girafarig. I settled for the former since you can plow through unboosted Girafarig the same, and the added power + Spikes is really appreciated. Plus, it will be pretty easy for an opponent to predict Tera Dark as a last resort option with their Speed-boosted Girafarig.
First rule of building 101 in Gen 9 LC is "Use Girafarig". I need not explain why. Here, I wanted, similarly to Mankey, a huge Attacker that really took advantage of Spikes-forced damage on Pokémon. I cooked up Tera Ground Nasty Plot Sap Sipper Girafarig. The premise is simple. I did not want my Girafarig to be able to get revenge-killed by another Girafarig after I Terastallized. I also wanted my Tera Blast to be able to plow through Pawniard, Tinkatink, and other obscure answers such as Stunky. I also figured blocking Volt Switch from stuff like Magnemite or Wattrel, as well as handling the rare Foongus pretty fine thanks to Sap Sipper and the subsequent Poison resistance nice. It also helps in soaking Toedscool or Bramblin's Power Whips. Psyshock might look like a dubious option at first, but I find it pretty interesting as it can score a K.O. on opposing Toedscool with minimal chip.
Tera Ground also surprisingly leaves you in a better state if you lose the Tera Flying Pawn mindgame, as you are weak to neither Aerial Ace/Tera Blast nor Sucker Punch.
Pawniard is another vital player of most Gen 9 LC teams. Here, it sets up Stealth Rocks to combo with Spikes whenever I need that. There is little to nothing to say about Pawniard, but I deemed Iron Head to be less valuable than Night Slash because Night Slash hits more relevant stuff super effectively such as Non-Terastallized Girafarig and Ghost-types.
Finally, another Pokémon I often find myself unable to build without, for it is such a good Pokémon! Toedscool brings to the table a few missing things that every Little Cup team adores. This includes Hazard Removal of our own, Knock Off support, another check to Girafarig, a 17-speeder to outspeed the plethora of 16-speeders of the tier, a natural Volt Switch immunity... You name it. It also packs Spore support to further annoy stuff, though you could replace this move (or Earth Power) with the strong Power Whip. I elected not to replace Earth Power here because I find it defeats the point of having a 17 Speed Toedscool to smack common 16 Speeders, but if you edit its set to be slower and more defensive there should be no problem. Tera Ghost is used to have a backup Spinblocker in case something goes south with Greavard.
I think that if God left something to humanity, it is Toedscool.