I'm surprised Commander hasn't banned him. I mean, only Legacy and Vintage haven't yet. Which is a little funny since Vintage banned Lurrus.
not as powerful in multiplayer, though still very good imo.
chulane itself deserves a ban much more than oko in edh. card is ridiculously busted and i feel bad playing it, i just really wanted to make a goodstuff value town deck that had reasonable answers to everything. well, i achieved it. reminds me of when i first started playing edh and i brought mono white eight and a half tails prison deck focussing on land d and stax effects feat. humility to my (at the time) very casual meta and had to endure constant groans. usually my goodstuff deck is my aggro-midrange saskia, but that's actually just genuinely fair fun (with some infinite combats possibilities, but still have to win via combat). simic in general in edh is busted and a bit boring (kinnan, yarok, golos, chulane, muldrotha, vannifar etc etc).