Speaking of the lands and the speed of the format, its easy to compare how Omnath, Locus of Creation works in Modern and in Pioneer
The casting cost is fine at one-and-a-blue, but the 1/2 body is underwhelming
Lifegain is a popular mechanic among Commander players (at least very much among the players that I know), and a simple 4-drop that not only shuts off all lifegain but reverses it into life loss seems like an extremely powerful effect to me
Theres a decent amount of card removal to help enact your game plan, too, while Yuna, Grand Summoner and Walking Ballista still command a decent price
Over at Thousand Leagues, were running a bunch of sweet fantasy tournaments around VSL, and one type of tournament you can enter (for free!) is a Pick 6 Cards league
It was banned just days after it was printed, after all, thanks to its ability to counter your own spell and spin into something like Emrakul or Ulamog for free, usually on Turn 1 or 2