Leoric's Signet, Cain's Fate (set bonus) both give bonuses to experience worded like this:

Increases Bonus Experience by X%

I don't have either of these to test it out, but I'm curious to see if they are worth the investment.

Do these items work like a Ruby in your helm socket, increasing the experience for monster kills by 30%?

Or is the affix read literally to mean it increases only your bonus experience? I.e., with a 30% ring and you have +100 xp per kill, the effect increases that to +130 xp per kill.

If the latter, what qualifies as bonus experience? Just +XP per kill? What about NV stacks? What about a ruby in your helm?

Both seem like legal interpretations of the wording, but it is a huge difference in the attractiveness of the items.

Can anyone shed some light on exactly how Leoric's Signet and the Cain's Fate set bonus work?

  • afaik it works exactly like a ruby. But then, I haven't shelled out 100m to buy one to test it yet. If it didn't, I really doubt it'd cost that much.
    – l I
    Commented Sep 4, 2012 at 12:36
  • This is purely speculative, but if you've got 105% bonus XP from NV and a ruby, a 30% bonus to that bonus would actually be more attractive. 105 * 1.3 = 136.5 -- a 31% increase.
    – dpatchery
    Commented Sep 4, 2012 at 12:40
  • a cheaper way to test this is to see the behavior of cain's set and its interaction with a ruby
    – l I
    Commented Sep 4, 2012 at 12:57
  • @yx Thanks, edited the question to include that item set.
    – dpatchery
    Commented Sep 4, 2012 at 13:09
  • @dpatchery why don't you just buy Cain's set to try it? It only costs 60k or so for 3 items. And yes, it works exactly the same as a Ruby in a helmet
    – Novarg
    Commented Sep 4, 2012 at 15:40

1 Answer 1


It works exactly the same as a helm ruby. Both items increase the "Bonus Experience %" stat on the character sheet. Despite the somewhat confusing name, this is a % increase to the base experience gained for each kill.

  • As you point out most % increases of really any character stat increase the base value.
    – Ramhound
    Commented Sep 4, 2012 at 16:06

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