I'm wearing the full Uliana's Stratagem set. Its 6-piece bonus is:
Your Seven-Sided Strike detonates your Exploding Palm.
I'm also wearing Madstone, which means:
Your Seven-Sided Strike applies Exploding Palm.
I'm hoping that, as per this link, Madstone would proc first, applying and then detonating EP. It certainly seems to apply it, but enemies that don't die from SSS appear to still have EP applied to them.
Is EP really detonating as the US-6 bonus dictates it should? It's hard to tell because, in all other cases, it only detonates in death (so there's nothing left for it to be applied to).
(I know that Madstone is probably overkill for most applications; I'm just experimenting with the build :)