Gonna just be a wildly random set of normal Anniversary Dial rewards, with the addition of high tier battlefield drops that weren't previously included in the Anniversary Dial (offical
update about the seasonal event gives the examples of The Orb's Radiance and Divine Interference). According to BGwiki, the Anniversary Dial includes:
Quote:
Obtainable loot seems to be everything normally dispensed using the 50 point dial, everything obtainable from SP Gobbie Keys, and rewards from all battle content. Omen Bodies, all Omen Accessories, Tartarus Platemail, etc. have been obtained.
FWIW, I got a FES dial key today on my main, alt, and a couple mules. Got:
Moblin Thread
Palladian Brass Chain
Piece of Ancient Lumber
X-potion +2
It's basically an SP Gobbie Key +1.
The more interesting part will come in 10 days once people get their 10th daily FES key and get the rainbow box that, as noted in this month's update notes, will "boost your chances of getting high-tier mission battlefield and high-tier avatar battlefield spoils." How much of a boost, does the rainbow box prioritize items we'd consider "good" (rare Crepuscular items, Null Masque, etc), that kind of thing.
Event is only on from 16-Dec to 31-Dec, so there's only enough time for any character to get one rainbow box during the event.