Multiattack

The skein witch makes two Inexorable Thread attacks.

Inexorable Threads

Melee Weapon Attack: +9 to hit, reach 30 ft., one target. Hit: 27 (5d8 + 5) radiant damage, and the target is "one step closer to death."If the target is reduced to 0 hit points, it's treated as if it's already failed one death saving throw. This effect is cumulative; each inexorable threads hit adds one unsuccessful death saving throw. If a character who's been hit three or more times by inexorable threads is reduced to 0 hit points, he or she dies immediately. This effect lasts until the character completes a long rest.

Bind Fates (1/Day)

One target within 60 feet of the skein witch must make a DC 18 Wisdom saving throw. On a failed save, the target's fate is bound to one random ally of the target. Any damage or condition the target suffers is inflicted on the individual to which they are bound instead, and vice versa. A creature can be bound to only one other creature at a time. This effect lasts until either of the affected creatures gains a level, or until a heal or heroes' feast lifts this binding.

Destiny Distortion Wave (Recharge 5-6)

The skein witch projects a 60-foot cone of distortion that frays the strands of fate. All targets in the cone take 55 (10d10) force damage, or half damage with a successful DC 18 Wisdom saving throw. In addition, if more than one target that failed its saving throw is affected by a condition, those conditions are randomly redistributed among the targets with failed saving throws.