Raid Boss Without Lockout (MOP Remix) (Patreon)

There is an older technique used in wow known as the "soft reset" where you:

1. Have your character exit an instance completely.

2. Return after half an hour.

This method has been used since original Burning Crusade to reset trash.

However in MOP Remix* you can actually use this method to reset a boss (and his surrounding trash packs). The second boss of Heart Of Fear Blade Lord Ta'yak.

You can do this repeatedly while running LFR or farming the Dread Wastes.

WARNING: if you complete the whole raid, you will be placed in the latter half of the instance and unable to access the blade lord, as the doors are closed. It is recommended you only complere the instance just before reset if this is possible.

*This actually works in retail but is less useful there, though I have farmed it in the past for the pet drop which used to sell quite fast.