Okay the friendly discussion about Corviknight got me thinking a bit if I could make a sort of throwback Offensive
Skarm Corv set. So here is what I frankensteined together:

Corviknight @ Expert Belt
Ability: Pressure
Tera Type: Ground
EVs: 252 HP / 68 Atk / 80 Def / 108 SpD
Adamant Nature
- Tera Blast
- U-turn / Bulk Up
- Defog
- Roost
- Tera Blast makes the whole thing work.
- U-Turn lets you U-Turn, what do you want from me
- Bulk Up can be used during a switch and can make some important OHKOs and 2HKOs possible
- Defog/Roost to do normal Corv things
So I'm not sure how to organize this so I'll just go through some calcs, first off the things that would probably switch into Corv:
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68+ Atk Expert Belt Tera Ground Corviknight Tera Blast vs. 0 HP / 0 Def Magnezone: 389-461 (138.4 - 164%) -- guaranteed OHKO
Heh, classic
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Okay the Dengo matchup is a bit more complicated, first off without any sort of damage boosts Make it Rain or Shadow Ball won't 2HKO. While Tera Blast will 2HKO as long as it isn't a fully defensive bulky set. And will still 2HKO if the Expert Belt is lost. +1 will OHKO non defensive sets.
68+ Atk Expert Belt Tera Ground Corviknight Tera Blast vs. 252 HP / 0 Def Gholdengo: 230-274 (60.8 - 72.4%) -- guaranteed 2HKO after Leftovers recovery
68+ Atk Tera Ground Corviknight Tera Blast vs. 252 HP / 0 Def Gholdengo: 192-228 (50.7 - 60.3%) -- 85.5% chance to 2HKO after Leftovers recovery
+1 68+ Atk Expert Belt Tera Ground Corviknight Tera Blast vs. 0 HP / 0 Def Gholdengo: 341-403 (108.2 - 127.9%) -- guaranteed OHKO
However, Specs or Nasty Plot will always win the matchup by 2HKOing and outspeeding.
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This one is still tough, you no longer get munched on by Salt Cure but in order to hit that 2HKO threshold through leftovers, you will need more attack investment. Without Bulk Up, you'll need 192+ will hit the 50% damage threshold on 252/4 defenses while the highest you can hit is a 94.5% 2HKO with 240+ ATK. But yea, still not great.
68+ Atk Expert Belt Tera Ground Corviknight Tera Blast vs. 252 HP / 4 Def Garganacl: 175-209 (43.3 - 51.7%) -- guaranteed 3HKO after Leftovers recovery
240+ Atk Expert Belt Tera Ground Corviknight Tera Blast vs. 252 HP / 4 Def Garganacl: 209-247 (51.7 - 61.1%) -- 94.5% chance to 2HKO after Leftovers recovery
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View attachment 486406 types

68+ Atk Expert Belt Tera Ground Corviknight Tera Blast vs. 0 HP / 0 Def Iron Moth: 662-782 (219.9 - 259.8%) -- guaranteed OHKO

68+ Atk Expert Belt Tera Ground Corviknight Tera Blast vs. 248 HP / 0 Def Skeledirge: 218-259 (53 - 63%) -- guaranteed 2HKO

(this one is still an L)
68+ Atk Tera Ground Corviknight Tera Blast vs. 248 HP / 108 Def Volcarona: 111-132 (29.7 - 35.3%) -- 21.8% chance to 3HKO
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Extra stuff:
Obviously Tera Ground will force a switch from any choiced attacker with an electric move such as

or
Tera Blast also OHKOs

and

2HKOs

,

,

, and

And 3HKOs

and

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So yea that's the set, most likely not the most optimized. The defense at the moment is just a dump stat, like it stops some niche things like Kowtow Cleave from 2HKOing until at least 3 dead and prevents +0 Dondozo Liquidation from 2HKOing. But overall, its just a place to dump extra stuff to maintain the illusion that this guy should be a physical tank. So if you have anything to add/tweak to this please let me know!