It has cards, but it's not mentioned on the steam store page.
see:
http://www.steamcardexchange.net/index.php?gamepage-appid-489220
https://steamcommunity.com/app/489220/discussions/0/358417461606968895/
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http://gleam.io/c8Nyj/unforgiving-trials-the-darkest-
Unforgiving Trials: The Darkest
http://store.steampowered.com/app/489220/
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