Two types of cards are banned: generically powerful cards that would warp the format, like Oko, Thief of Crowns, and cards that prevent an opponent from leveraging their commander
We've seen cards like this plenty of times before, like PongifyPongify and Beast WithinBeast Within, which give your opponent a very small reparation for the valuable permanent they just lost
Because R&D falls in love with it first
Also, that ward 2 isnt nothing
The Gitrog Monster One of the greatest commanders to ever crawl from the swamps of Shadows over Innistrad , The Gitrog Monster combines ramp and card advantage into one potent package
Of course, youd have to sacrifice one of them because of the legend rule unless you turn off the legend rule with Mirror Box, Mirror Gallery, or Cadric, Soul Kindler