You will be purchasing: a PREMADE URSALUNA meant for Tera Raids in Pokémon Scarlet and Violet.

Summary

The best ability for Ursaluna in Tera Raid Battles is Guts. Guts boosts Ursaluna's damage output when it is afflicted by a status condition, and stacks with Belly Drum!

Best Tera Type

We also recommend getting an Ursaluna with a Ground Tera type to boost the power of Headlong Rush. As a Physical Attacker, Adamant nature would be best.
Best Tera Types: Best Pokemon to Terastallize

EV Spread Explanation

Tera Raid EV spreads should lean towards Bulky Offense. Max out your HP and Atk EVs, while adding the remaining EVs into Def. Give it a Shell Bell to help Ursaluna recover HP when dealing damage.

Tera Raid Strategy

Always start tera raid battles by using Belly Drum to maximize Ursaluna's Attack stat. After raising your Attack stat, use Drain Punch to recover the HP lost from using Belly Drum, while also charging your Tera Orb.

Against opponents that deal Physical Damage, using Fling to burn the raid boss with your Flame Orb may be a good idea!

Once you have enough Tera Orb Charge, Terastallize and use Headlong Rush to deal stat-boosted damage.

Effective Counter Against Fire, Electric, Poison, Rock, and Steel Type Tera Raids

Super Effective (2x)
Not Very Effective (x0.5)
No Effect (x0)

This Ursaluna Tera Raid Build is an effective counter to Fire, Electric, Poison, Rock, and Steel Type Tera Raid Bosses. If the Tera Raid Boss is usually a Water, or Grass Type outside of Terastallization, perhaps consider a different build, as Ursaluna will be weak to these Types as a Normal-Type attacker.