Hopefully it doesn't become a problem but I was never a fan of STAB stacking when it came to Terastilization. Are there any non stall answers to Tera Fairy Enamorus that don't involve sacking and revenge killing?
One of the hardest things to get used to in this Meta was the fact that sometimes, you just gotta let something get KOed and that you're not just gonna be able to switch your way out of that situation
If you want three non-stall answers, there's AV Toxapex, AV Slowking-Galar, and AV Ursaluna. You need to have really good hazard control For Ursaluna though and/or Grassy Terrain support. For some calcs regarding Ursaluna before you yourself use Tera when the situation demands it:
+1 252 SpA Life Orb Tera Water Greninja Hydro Pump vs. 248 HP / 252+ SpD Assault Vest Ursaluna: 442-525 (95.4 - 113.3%) -- 75% chance to OHKO
244 SpA Choice Specs Tera Water Walking Wake Hydro Steam vs. 248 HP / 252+ SpD Assault Vest Ursaluna in Sun: 428-504 (92.4 - 108.8%) -- 50% chance to OHKO
+1 252+ SpA Protosynthesis Raging Bolt Weather Ball (100 BP Water) vs. 248 HP / 252+ SpD Assault Vest Ursaluna in Rain: 404-476 (87.2 - 102.8%) -- 18.8% chance to OHKO
252 SpA Choice Specs Tera Ice Kyurem Blizzard vs. 248 HP / 252+ SpD Assault Vest Ursaluna: 400-472 (86.3 - 101.9%) -- 12.5% chance to OHKO
+2 252 SpA Life Orb Darkrai Focus Blast vs. 248 HP / 252+ SpD Assault Vest Ursaluna: 387-458 (83.5 - 98.9%) -- guaranteed 2HKO
+1 172 SpA Tera Fighting Iron Crown Focus Blast vs. 248 HP / 252 SpD Assault Vest Ursaluna: 320-380 (69.1 - 82%) -- guaranteed 2HKO
252+ SpA Choice Specs Primarina Surf vs. 248 HP / 252+ SpD Assault Vest Ursaluna: 264-312 (57 - 67.3%) -- guaranteed 2HKO
+2 252+ SpA Protosynthesis Raging Bolt Dragon Pulse vs. 248 HP / 252+ SpD Assault Vest Ursaluna: 229-270 (49.4 - 58.3%) -- 98.4% chance to 2HKO
+2 252 SpA Gholdengo Make It Rain vs. 248 HP / 252+ SpD Assault Vest Ursaluna: 220-261 (47.5 - 56.3%) -- 84.8% chance to 2HKO
+2 252 SpA Quark Drive Iron Valiant Moonblast vs. 248 HP / 252+ SpD Assault Vest Ursaluna: 211-250 (45.5 - 53.9%) -- 46.9% chance to 2HKO
+2 252 SpA Quark Drive Iron Moth Fiery Dance vs. 248 HP / 252+ SpD Assault Vest Ursaluna: 199-235 (42.9 - 50.7%) -- 3.1% chance to 2HKO
252 SpA Choice Specs Tera Fairy Enamorus Moonblast vs. 248 HP / 252+ SpD Assault Vest Ursaluna: 178-210 (38.4 - 45.3%) -- guaranteed 3HKO
So you have some room to maneuver if you manage to misplay badly against these threats. I would not use this outside of very specific balances that want Ursaluna to check Raging Bolt, Iron Moth, Gholdengo, Iron Moth, and Iron Crown while not being abused by Fairy-type special wallbreakers or non-grounded mons (Air Balloon users included) since it is slightly bulkier than Ting-Lu on the special side while not typically only having Earthquake as a finishing move, but you will probably need a secondary special wall as well, especially something for Choice Specs Kyurem and Walking Wake, since there's no way Ursaluna can handle all of the mons I mentioned by itself unless you commit to primarily using offensive counterplay. You can tell by the calcs that Ursaluna absolutely owns Speed-boosting variants of Iron Moth and Iron Valiant looking at these calcs, and it can handle them with ease. People sometimes forget that Ursaluna has cover legendary-bulk due to it being more often used as a strong breaker.