Got French Maid Nidalee (or whatever its called) in my shop. I have never ever played her before, and never will.
Also got Star Guardian Soraka, Soraka I've used maybe 6 or 7 times ever.
I did get 70% off Snow Day Bard ( =405 RP) so that will be the one and only purchase I make. Riot made it easy for me this year.