They also get exponentially better for each opponent you have: more opponents means more creatures means more lifegain
Needless to say, the possibilities for creating your Cube are limited only by your own imagination
Despite the Commander 2011 precons overvaluation on secondary markets, the decklists themselves havent appreciated as much as you might think
I believe that most Gridfinity bins should work so long as you use a bin corresponding to the correct insert (2x2 for a 2x2), although I have not tested
Devil could use more representation, and ideally a support spell or two next time we go to Innistrad, but for a tribe that barely exists outside of one plane, its doing quite well
Nadu's ability only triggers twice per creature per turn, but if you can remove a creature from play and return it, that counter resets