Spoiler warning: The following content contains unhidden spoilers for Act 3.
The Darkening Hunt is a hostile Countermeasure Aberration character in Baldur's Gate 3 who may appear during the final battle Atop the Netherbrain if the player sides with the Emperor. It will appear if a ranger is present in the party.
Your attack summons thorny vines, dealing Weapon Damage and possibly Ensnaring your target.
Ensnared creatures cannot move and take 1d6Piercing damage at the start of each turn. An ally can use their Help Action to try and tear away the vines.