Unlike all the other boss drops listed in the item database the drops from this timeline's boss (Bhuldar, Herkir, and Logi) don't list a % chance to drop. I've run the timeline around 8 times and only gotten Bhuldar's drop, so I wanted to make sure I'm not missing something obvious to get the other drops, like if kill order affected drops.
External link →The order does not affect it. The drops work more or less the same as they do for other timeline bosses, except instead of dropping from any of the individual bosses they drop in the centre of the arena once all the bosses are dead. This distinction is probably what's causing the item database to fail to pickup the drop chances.
Bhuldar's Wrath is by far the most common drop and while you're a bit unlucky to have gotten neither of the others after 8 runs, it's not that unlikely. I think the chance of not getting Herkir's in 8 runs is around 29%. Keep in mind that Logi's only drops in the empowered, level 100, version of the timeline, so if you're running the basic version it can't drop.
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