Albirakor

God's Bitter Love: Holy magic becomes mute in the Albirakor's presence. Damage from Holy Magic is reduced by 1d20+3. 

Frauline: If this creature kills a party member, it absorbs that party member, assuming it's form and abilities for 3 rounds.

Unyielding Suffering: Deal 15 damage to all party members around 6 feet at the start of each of this creature's turn. This damage becomes 30 if any of the party members are wearing Heavy Armor, and 60 if any party member possesses holy items or are wearing clothes/symbols that show an alignment to Lawful Good/Neutral Good. 

Dead Hands: Grab a party member 3 feet away. The grabbed party member cannot cast Spells and is Terrified for 3 turns. The grabbed party member must make a DEX save of 20 or higher to avoid this action. 

Albirakor: The creature assumes it's true form, Frightening and Disarming all party members within 10 feet. This also deals 50 damage to anyone wearing Heavy Armor, 30 Damage to anyone wearing Medium Armor and 25 damage to anyone wearing Light Armor.  

Fealty of Kings: At half health, the Albirakor will immediately reveal it's true form and unleash an ear piercing scream that covers 2 kilometers. During this time party members must make a CON save. If the CON save is 15 or higher, the party member is left deafened but become immune to any further damage from the Albirakor. If all party members make successful saves, the Albirakor will flee. If a party member makes an unsuccessful save, they will be put into a comatose state and be unable to be revived by actions until combat is over. 

Black Heart: If the Albirakor is struck by a weapon or unarmed melee attack, they will inflict 1 of three curses, those being Kinslayer, Anoris Curse or Sectum Sanguinum. 

Petty: If the Albirakor is defeated, it will ascend into the sky and become a ball of condensed mist, before coming down, exploding into a massive fog that turns the day to night. The fog will span 10 kilometers. This action inflicts no damage, but anyone caught within the fog will be unable to cast magic and any armor that is Heavy or Medium becomes brittle.