Is Gurubashi Arena broken on anyone else's server? The event did not start at 9 AM server time. I waited until 10:10 server time and the event still had not started.
I have to mention that the ones that drop from bosses are "Personal Loot". Meaning that if you go with a friend each of you has a different chance to loot it off the boss, regardless if the other one lots it.
Lost Sentinel's Pouch for MAGIC music roll, is located at 56.4, 49.2. Inside a Tree, just follow the road.