Oko has gathered a team of misfits from across the multiverse - including Tinybones, The Pickpocket, Annie Flash, The Veteran, Kellan, The Kid - also Okos long-lost son - as well as Vraska, the Silencer and Rakdos, the Muscle: who are both originally from the Ravnica plane
The sorcery-speed restriction keeps it fair, but decks built around expendable artifacts or death triggers gain consistent value with every activation
Sure, it is probably the thing you wanted to deal with but it feels like red has better ways of dealing with non-basic lands
Ancient Copper Dragon also sees regular play in cEDH, in decks like Magda, Brazen Outlaw and Scion of the Ur-Dragon
Its a big hurdle placed in the opponents path, and the time it takes them to get over it is time you can spend catching up or winning the game yourself