The Mighty Baxcalibur appearing in 7-star raids has a high attack stat that it boosts with Swords Dance. It also has good coverage moves so many trainers have found success using Fighting types against it.
Ability:
Thermal Exchange
Tera Type: 
Moves:
Glaive RushIcicle CrashCrunchEarthquake
Additional moves: Swords Dance (used twice)
Example Solo Builds
Held Item:
Shell Bell
Ability:
Ice Body
Tera Type: 
Nature:
Impish
EVs:
252 HP 252 Def 4 SpD
Moves:
RecoverChilling WaterIron DefenseBody Press
Held Item:
Fist Plate
Ability:
Multitype
Tera Type: 
Nature:
Modest
EVs:
252 HP 4 Def 252 SpA
Moves:
JudgmentRecoverIron DefenseAcid Spray
