So I did get HC Bells of the Endless Feast trinket to test on my DH, people said its horrible and wont procc at all, so I wanted to see it myself.
Yeah, it does not. Since the Trinket builds 100 stacks on target before it triggers, this never happens on several bosses in sepulcher, since for example Xymox, gets immunity when adds spawn etc.
On Mythic+ its even more useless since nothing lives more than couple of seconds, even on +15, it never has the chance to trigger.
On HC Halondrus, I was smashing the boss with 100% uptime and there after the encounter damage was only 5% of my total.
Instead of stacking the number on monsters or boss, please change the trinket to save the stacks on player so it can become even remotely useful.
It’s pretty cool trinket, but currently the effect part is completely useless compared to anything else.