lots of folks misunderstand what rule zero is and isn& #39;t. it is simply an encouragement to have a conversation before you start your game about what the power level is. it& #39;s not a panacea to solve all of commander& #39;s problems, nor is it a response to folks who want things to change
when we say & #39;hey, talk to the folks at your table to see if they& #39;ll let you run a planeswalker commander& #39;, that& #39;s literally just that. a statement to provoke a conversation. sometimes, the answer is yes, sometimes it is no. but it& #39;s not a way to handwave off concerns.
r0 is a formalized way of saying look, everyone else at your table is playing mono chair tribal, and you brought thrasios and tymna, and maybe this isn& #39;t a good match and yall would be happier by checking this before you start.