My wild cards are usually a wild swing in a new direction for my personal style. This year, I went a little bit crazy and bought a lot of pink. I have never been a pink kind of girl, but some of the cooler-toned pinks really appealed to me this year and I needed some new stuff thanks to a weight gain. So pink would be a wild card for me, and so far it's working. (Like the finds). I even bought some pink pants--casual jersey knit wide legs for lounging and such, custom made to measure, with pockets added
In that same vein, I'm not a glitter kind of girl, and yet I bought these pink glitter sneakers with freaking pompoms on them. I'm enjoying them while the glitter lasts. When it flakes off, I probably won't do glitter again for a while.
I also picked up a top by Agatha Ruiz de la Prada (the blue one in finds). While I love looking at her stuff (so playful, so bright), I could never picture myself wearing it. Well, this one spoke to me and I got it at a very good price, so I did it.
Sometimes, a wild card becomes a mistake, like the olive long t-shirt in finds. The color was doing my complexion no favors, so I relegated it to the yard work pile of clothes.
But yeah, wild cards for me are wild swings in a new direction. Sometimes, it's color, sometimes it's a random playful piece that is out of character for my wardrobe. Often it works out, sometimes it doesnt.