User blog comment:Linathan/Guide: How to claim your FREE unit (Brave Frontier 2nd Anniversary) & Lucia/@comment-76.115.107.27-20151123094139

Lucia is a 6* unit that is pretty powerful with an 8 hit attack. Also the rewards depend on WHICH DAY not HOW MANY DAYS, also the UoC cannot be a unit that you are unable to receive twice (exceptions are: Lindsey, Symphonia, Yuuri, Aludra and the units from those Collaboration events with Chain Chronicle.