1. Zone into to trial
2. Go behind Master with your group
3. Hail Master to start the event
4. Get agro on all the mobs that spawn each wave, as if you don't, they will despawn and you will struggle to get your quota before time expires.
*** If you cannot keep up with the kills, then move to the front of the Master and do whatever you can to keep up with the quota before your time runs out.
5. Once you get your quota, you can attack the Master. Don't expect him to agro and attack once your quota is met, you need to keep track.
6. Don't delay in attacking him or burning him down if your group is in the level 70 range. Higher level toons will have zero problem with disposing of this guy.
Target shell after it's over, /open to loot.
3 day lockout on successful trial
2 hour lockout on all other trial
Unsure what your timer will be if you fail.