Lightning fate needs to spawn more often

[Syrellaris]

I sat around for 2 hours trying to do the Lightning fate I saw her spawn once. Despite spaming blizz 2 in a party i got a bronze.

This really isn't fun when you have about 500 people in 1 spot trying to aoe these mobs.

i sat around foe 30 minutes, saw her 3 times. She spawns ever 2nd time the fate starts..