Hey this is gonna be very simple guide.
I took my SP, my mage buddy and when we stand in front of 1st pack in BoT there are 4 mobs. Only 1 is immune to cc so we go like this:
1. MC Twisted mender and immediately aggro both knights
2. sheep that ranged one ( cause of his wyvern sting which would wipe us )
3. let Mender drop at cca 100k hp ( while MC you can heal yoursefl because knight sometimes put void zone under you )
4. silence/CS mender and kill
5. pop dispersion/blink and run out of the inst
6. profit ( at least 20g from mob ) .. we did it 1 hour and dropped BoE epax sold for 12k .. depends on server
7. do it again
If you think you are superimbadpsskilled priest you can try solo but remember: dont break mc on 20k etc ... cause its some bug and you dont get any loot ...
Edit: one more thing: its not a bug if you kill that mob and it doesnt give a loot ... Soul blade just kill him with some DoT