[Incite Rage]ωϖ—Increases a nearby Spectral Patron's attack speed by 200% for 6 sec, but slows attacks when it wears off.
[Ill Gift]ωϖ—Deals 3150 to 3850 damage to a random target, but restores 1575 to 1925 mana.
Strategy
These mobs generally come with non-elites in four or five pulls. It is not, however, suggested you AoE them as they are immune to snares, crowd control, and taunt.
Using Seed of Corruption on the "Philantropist packs" on the tier directly after the opera can aggro the packs above likely resulting in a wipe.
They used to drop a considerable amount of gold (about 10-12 each). They only appear in the area after the Opera event.