Take a look at Pack Rat, as an example
This creature has the effect of allowing you to play two additional lands each turn, which can be silly and sometimes even ridiculously strong if you include the right land cards and draw power
Atsushi, the Blazing Sky Atsushi, the Blazing Sky is an affordable dragon spirit that can apply pressure to your opponent
But, it actually gets substantially cheaper to play, because it reduces its own casting cost by one generic mana for each snow land you have in play
You need at least five basic Swamps in play before Cabal Stronghold nets you positive mana, and you can't cheese it with Urborg, Tomb of Yawgmoth quite as much, since the Stronghold only counts basics
Let us know who your favorite new commander is, and what kind of deck youre most excited to build