how to summon nightbane?

Smoldering Ember Wyrm

7.1 karazhan of the nightbane
When you step into karazhan, there will be a tip: some strange dark wind filled the air. Then starts the timer. Only play 3 Boss all the way, more than 870 teams time is very abundant. Process failed to reset! According to the process is
100% can summon.
Compare the efficiency of the process is as follows, for your reference:
1, the total in the opera house, play to under stand the first fragment.
2, go directly to the sister qing in front of the room, take the second fragment, the virgin don't have to play.
3, struck the mo Ross downstairs, take the third pieces.
4, go to the bottom spiders room (karazhan on the first floor of the right, from the sister that also can go down) with a fourth fragments (done task should know location) and then commit suicide, back to the copy of the entry, (the entire copy of the most fierce little strange, spider positive aoe spider spray is very small blame
Strong, if need more tanks tricks or coma skills such as forced interrupt).
5, and smote the curator, to get the fifth fragments.
Once all the pieces you within the prescribed time, your timing buff will become "medivh's breath," you have five minutes and medivh Yan dialogue and summon night. Play call before night Yan animation.
6, to karazhan night's Yan call platform and master dialogue, achievement < karazhan night >, then is called the night's Yan.
You after conversation with medivh Yan and summon night, you can literally destroy the group. He will always be there, every kill you shout to you two.
Nightbane boss drops to 875 + full chest armor and full series of holy + mount a, and a fear act the role ofing is tasted.