It's difficult to remove Wonder, save for some occasional graveyard hate
However, what makes her an effective flash commander is that her ability can essentially allow for a complete regeneration of your mana pool after your turn
Wizards updated the text on thousands of cards at once with only a few changes: What used to be in play (and other ways of wording it) became the battlefield, meaning things would now enter the battlefield instead of come into play. This clarified confusing wording on some cards
Commanders like Eshki, Temurs Roar are frankly absurd
When that opponent loses, you win , meaning now you only have to take out one other player instead of all three opponents to win a game of Commander
The living world of Zendikar is represented by the mechanics landfall and awaken , the former of which returns from the original Zendikar