I apologize if this is considered spam. I don't come here often, but my interest is real.
I recently released a version of PathWrath 2. It doesn't have flashy graphics, but it's free to host, free to play, and was inspired by Culdcept.
One mechanic that PathWrath 2 does not share with Culdcept is card collection. All players have matching decks.
However, deck constructors can still get their fix. PathWrath 2 allows anyone with a text editor to create entire decks of cards using XML and the help files provided with the game. Meanwhile, people who are not into XML can simply copy and paste existing cards into a new deck. Naturally, hosts can choose to have their server use any deck on their hard drive.
PathWrath 2 does require BYOND, but that's free too (in terms of both money and adware).