Summons mezzable low-hitpoint adds (called what?) throughout the fight. They despawn after 15-30 seconds.
Band of Rotting Leaves
Glowing Alaran Cantrip
Grandiose Wristwraps of Alra
Greater Alaran Cantrip
Hralkt, Darkbow of Unwilling Servitude
Immaculate Muscimol
Shadowed Hoop of Decaying Leaves