Large monstrosity, Chaotic Evil
Armor Class 15
Hit Points 53 (7d10+14)
Speed 60 ft
STR DEX CON INT WIS CHA
18 (+4) 12(+1) 15 (+2) 15 (+2) 12 (+1) 14 (+2)
Saving Throws: Wisdom +4, Constitution +5
Skills Deception +5
Senses passive Perception 11
Challenge 2 (450 XP)
Unicorn Form. The Shadhavar can transform into a white unicorn. While in this form the Shadhavar’s alignment appears to be LG for the purposes of alignment detection. In addition, creatures riding the Shadhavar are gain Condition Immunity Poison and Damage Immunity Poison.
Project. Between sun and down, the Shadhavar can take a shadowy spirit form and stalk prey. In this form it gains: Damage Immunity from bludgeoning, slashing, and piercing from nonmagical weapons.
Multiattack. The Shadhavar can make two gore attacks.
Gore. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 10 (1D8+5) piercing damage.
Keep an eye out for Lusus Naturae. I'm sure it will shock and appall you in all the right ways.