If a mob has a loot table then it has a chance at a global loot item. The only thing the code looks for is whether the mob is able to drop an item and if true then it equates out the % chance of a global loot dropping based on these equations:
viewtopic.php?f=2&t=10741. *note* the maximum level below is actually 10 now instead of 20. So a level 70 can only get global loots from lvl 61+ npcs
Also just for fun info... There were 13 shrouds of Hatred found in the day that it was active

Oh the fun you all are going to have in DSK3...
Simon says.. touch the green one! Nooooo BLIQUE NOT THE RED ONE! zomg you just got me "Vaion Touched"!