Atraxa, Grand Unifier is one of the most powerful creatures ever printed, rivaling the infamous Griselbrand - take advantage of the powerful Commander in this Phyrexian-flavored deck full of Infect counters and Proliferate, one sure to plague the table
1 Kodama's Reach and Cultivate Sure, some decks may be designed around something else, such as Far Wanderings or Sakura-Tribe Elder abuse, but the vast majority of decks with green in them want Cultivate or Reach
In the late game, we potentially can store up enough energy to make three, four, or more on the turn that Whirler Virtuoso comes into play, which is a ton of bodies for just three mana
Nadu was also banned in Commander, so we can't even really discuss its applications there (not that that's my area of expertise anyway, mind you)
A second island in the distance suggests that this keeps going
A similar trainer class took over for Delinquents, presumably due to the negative connotation of the name