They've been used in lots of sets so far, and from the looks of it well be seeing more in the future
Each set only gives us a few hundred illustrations, a few hundred card titles, and about 10,000 words of flavor text to communicate everything about a world, its history, and why a sapient gingerbread woman is out for revenge
Dolmen Gate says prevent all combat damage that would be dealt to attacking creatures you control. This is a good representation of Karlachs ability to take reduced damage while raging
I have a deck that likes to proliferate, and Patrolling Peacemaker is by far the most frequent and reliable proliferation engine in it
Interestingly, it was at this point that the team first came up with the idea of the two-faced card
No need to give all of your opponents a bunch of cards for free if you don't have to