After playing a bit with said trinket I noticed that it doesn't stack properly. By that I mean I'm only gaining stacks after casting Mindblast and Shadow Word:Death when Mind Flay should trigger the trinket as well. I'm guessing other similar trinkets like the one from OS 25 is bugged as well.
Vampiric touch, shadow word: pain, devouring plague,mind sear and mindflay should all apply stacks.Currently only mind blast and shadow word death are doing it.
