Druid T10 Balance 2P Bonus – When you gain Clearcasting from your Omen of Clarity talent, you deal 15% additional Nature and Arcane damage for 6 sec.

Druid T10 Balance 4P Bonus – Your critical strikes from Starfire and Wrath cause the target languish for an additional 5% of your spell’s damage over 4 seconds.

So with the new PTR there comes new datamining and with new datamining comes new work! The trend of mediocre four piece set bonuses seems to continue as the first version offered a reduction in the Eclipse cooldown and now we see an Incinerate-esque trailer on our critical nukes. There seems to be much confusion over how Blizzard intends to implement this DoT. A stacking DoT has some RNG potential to be ridiculous. A refreshing DoT has potential to reach new levels of suckage due to DoT clipping on successive crits. A multiplicative DoT. . . well one can dream right?

I had though about trying to do some math on this new bonus, but decided that in all likelihood it will be modified and since the mechanics are so up in the air at the moment. I am, however, placing my chips on the current mechanic being a stacking DoT. Allow me to digress and suggest an alternative. Wouldn't it be neat if these were charges that detonated after 4 seconds? Sort of like a variable Curse of Doom. If you want to control the max damage possible, then put a cap on the stack number. But it would certainly give us something to play with, allow us to do damage while moving (in a sense) and increase our damage. Maybe we could call it Starburst. (Or Skittles so I can yell "Taste the rainbow, you scurvy dog!!").

If this set bonus stays put for a few days I'll theorycraft on it, but for now, let me say that it's really not all that much of a DPS increase for us, although it might have interesting implications on modified fights like Hodir. Stay tuned for more updates as we get more information!