Episches Munchkin is a German-language set of 33 reference cards that contain the special Epic Munchkin rules for races and classes between levels 11 and 20. They are the same size as regular Munchkin cards. In addition, it includes a metal level counter, similar to the Munchkin Level Counter released by Steve Jackson Games.
The reference cards cover all classes and races for the following Munchkin games:
Star Munchkin 1 & 2
Munchkin Bites 1 & 2
Super Munchkin 1 & 2
Note that nothing in this expansion has an in-game effect -- it's just reference cards and a level counter.