Monsters

Medium Undead, AC 14, HP 40, Incorporeal Movement, Slime Attack, Improvised Weapon

Large Elemental, AC 17, HP 126, Earth Glide, Siege Monster, Multiattack, Slam.

Medium Undead, AC 11, HP 45, Ethereal Sight, Incorporeal Movement, Withering Touch, Etherealness, Horrifying Visage, Possession

Medium Undead, AC 12, HP 45, Keen Hearing and Smell, Pack Tactics, Incorporeal Movement, Sunlight Sensitivity, Bite, Cold Breath

Large Elemental, AC 17, HP 126, Spongy Form, Siege Monster, Multiattack, Slam, Whelm

Medium Swarm of Tiny Beasts, AC 14, HP 36, Swarm, Bites

Medium Swarm of Tiny Beasts, AC 10, HP 24, Keen Smell, Swarm, Bites

Medium Undead (Shapechanger), AC 16, HP 144, Shapechanger, Legendary Resistance, Misty Escape, Regeneration, Spider Climb, Vampire Weaknesses, Multiattack, Unarmed Strike, Bite, Charm, Children of the Night, Legendary Actions

Medium Undead, AC 12, HP 52, Incorporeal Movement, Freezing Touch, Woeful Scream, Horrifying Visage