monster

Whistler

CR 9

Large Aberration, Neutral Evil

Reveal Stat Block

Armor Class

15 (natural armor)

Hit Points

180 (24d10 + 48)

Speed

40 ft.

str

dex

con

int

wis

cha

Traits

Blurred Form.Attack rolls against the whistler are made with disadvantage unless the whistler is incapacitated.

Unusual Nature.The whistler doesn't require air, food, drink, or sleep.

Actions

Multiattack.The whistler makes three Psychic Swipe attacks.

Psychic Swipe.ms 8 to hit, reach 10 ft., one creature. ({@damage 2d10 + 4) psychic damage.

Otherworldly Melody 5.The whistler telepathically whistles an otherworldly melody into the minds of up to two creatures it can see within range of its telepathy. Each target must succeed on a 16 Wisdom saving throw or take 33 (6d10) psychic damage and become frightened of the whistler for 1 minute. A frightened creature can repeat this saving throw at the end of each of its turns, ending the effect on itself on a success.

Whistler

Whistlers are inscrutable stalkers hailing from airy, screeching reaches of the Far Realm. They are difficult to see as they're not tethered to one point in space, blurring in a state of perpetual physical uncertainty. A dead whistler appears as a gray, featureless, humanlike biped with long limbs and thin fingers. Those stalked by a whistler can't shut out its soundless, seven-note tune, an otherworldly melody that invades and scourges the mind. Few creatures that encounter a whistler escape; those that do are forever haunted by the stalker's frightful tune.