Sphere of Oblivion. The area within 20 feet of the Whisperer is warped into a complete emptiness. Any object or terrain feature, including the ground, that is not being worn or carried that comes within 20 feet of the Whisperer vanishes and does not return until the Whisperer moves such that the object is no longer within 20 feet of it. While a creature is in this area, they can walk as if there were a flat ground there, though they do not see a ground.

Innate Spellcasting. The Whisperer's innate spellcasting ability is Charisma (spell save DC 18, +10 to hit with spell attacks). The Whisperer can innately cast the following spells, requiring no material components:
     At will: Blight, Detect Thoughts
     3/Day Each: Fear, Eyebite, Flesh to Stone

Twist the Mind. Melee Spell Attack: +10 to hit, reach 10 ft., one target. Hit: 9 (2d8) psychic damage, and the target must make a DC 18 Charisma saving throw or be incapacitated until their next turn. If a creature takes damage from the same Whisperer's Twist the Mind more than twice in four rounds, they must make a DC 18 Constitution saving throw or be unconscious for 3d8 hours. During this time, they appear to be dead, and cannot be woken in any way.