Board Thread:Help Board/@comment-74.56.233.21-20151031192103

So I was reading the news, and came across the line saying you get a "free unit of your choosing", and thought to myself, well that's nice, without as much as a second glance. After browsing a couple pages, I am contantly seeing people asking "WITCH UNIT SHOOLD I PICK 4 FREEE?!" and it kinda dawned on me how big of a deal this is... Thing is, I have 0 information about this event, like when it is happenening, how do we pick, heck... I don't even know if it's already out or not. It's a pretty big deal too, since I am currently missing 1 Earth/Lightning unit for my squad, and I have no clue who would go well in there.

So I ask you, the BF Community, what do you know about this event, and possibly if you can help me choose a good unit to finish off a squad of Krantz(O)(Lead), Zenia(L), Tridon(A), Ciara(B) 