Each one is a colorless artifact with the artifact subtype Lander and the ability ", , Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle." Some spells and abilities that create Lander tokens require targets
Since the creature becomes permanently marked, you can also set up some nice wrath insolation or take things over with your own Damnation
The trick is finding ways to pump Pummeler first, then dumping your energy into it
This lil' combo is not only annoying, as it is a snooze fest, and unfortunately, it is still too trusty for the Niv Mizzet, Parun deck to have at least one of the pieces which make this possible
Once you get a taste of the Goyf, well you just cant have only one