­Wild Nacatl + Nightmare + Bloodrage Brawler

There's a few ways of combining these. One would be simply Terravore -- what would terravore cost fairly now. Should I allow it to skip discard and simply be number in graveyard? That's more like Nacatl and Nightmare, but less like Bloodrage Brawler. Well, the ability is supposed to come from the brawler, so lets mandate discard. And I guess GWR doesn't have access to the best discard colours, but green may have some draw, discard land.

Maybe it should be discard or mill? Keywording mill makes that a lot shorter to write! And G has more self-mill-lands.

The cost also depends very much how much those things are supported in the environment. It could be unplayable, or very strong, depending if there are existing land-discard-outlets, or I tweak it to work with fetchlands, etc.

This seems unnecessarily fiddly. Why not just "whenever you discard a mountain or plains, put a +1/+1 counter on ~"?

Oops. Yeah, what Dude said. I went back and forth between too many different variants and didn't notice I'd come in a loop to something that could be a lot simpler.