Your search for "smiling titan" revealed the following:
Attack on Titan Trading Card - AOT01 129/297 C UniVersus Ultrahard Steel (Mikasa / Mikasa Ackermann / Mikasa Ackerman)
$ 6.95Product details: Mikasa / Mikasa Ackermann / Mikasa AckermanThis cool card is hard to find! Try to collect them all!Item...