There is the video that recorded from bilibili.
https://www.youtube.com/watch?v=gj8luNfUo5U
log is here
8Nc4jJ7qCpRzYKZF#type=summary&fight=last
The path/kiting exploit in Lady Vashj Encounter phase 1 and phase 3.
As the video shows, a holy priest healed the warlock party who cast Life Tap and got huge threat that pal could copy the threat.
Someone may think this is a clever strategy using the existing mechanism.
The strategy makes lady Vashj can not cast any abilities including Static Charge, Multi-Shot, Entangle and Shock Blast.
What’s the worst, the priest and paladin tank who had copied the threat from priest can keep the threat by leaving the boss far away AKA the entrence of Vashj. (p3 begin at 10:08)
The strategy even should not kill the enchanted elemental, elites and striders in phase 2 and phase 3, just kitting in the same path and make the Vashj encounter like a dummy boss.