Wereboar, Hybrid Form is a Medium monstrosity with neutral evil alignment and Challenge Rating 4 in the 2024 SRD. This stat block includes AC 15, 97 hit points, speeds, traits, and actions.
Multiattack - The wereboar makes two attacks, using Javelin or Tusk in any combination. It can replace one attack with a Gore attack.
Gore - Melee Attack Roll: +5, reach 5 ft. Hit: 12 (2d8 + 3) Piercing damage. If the target is a Humanoid, it is subjected to the following effect. Constitution Saving Throw: DC 12. Failure: The target is cursed. If the cursed target drops to 0 Hit Points, it instead becomes a Wereboar under the GM’s control and has 10 Hit Points. Success: The target is immune to this wereboar’s curse for 24 hours.
Javelin - Melee or Ranged Attack Roll: +5, reach 5 ft. or range 30/120 ft. Hit: 13 (3d6 + 3) Piercing damage.
Tusk - Melee Attack Roll: +5, reach 5 ft. Hit: 10 (2d6 + 3) Piercing damage. If the target is a Medium or smaller creature and the wereboar moved 20+ feet straight toward it immediately before the hit, the target takes an extra 7 (2d6) Piercing damage and has the Prone condition.