Curses!

A deck to play a lot of cards I find fun.

I'll often lose games by trying to jump through hoops to get my forbidden-rider outcast to put the curse on the player instead of a unit.

A lot of wins come through haunted tome, which is how I like it.

The Parul's Choice -> Wanted Poster/permafrost -> Felrauk's Choice loop is fun and effective, and I've also used the alternate choices on occasion.