MTG

My playgroup has done the "neutral all planes shared deck" thing; in fact, we've never played Planeschase the way it was intended, but I think a better method is to have everyone choose a set of planes (say, 5-10) and shuffle those together to create the shared plane deck, rather than using all of them.

If you use the full set, certain deck types are just left in the cold; for example, there are far more planes that support aggro strategies than pillow fort (which makes sense, because there are more aggro decks), but it just creates a situation where certain players are favored before the game even starts.

rather than each player bringing a deck of planes, we just used a full set of planes (we played proxy back then), and had one big plane deck which was “neutral” to any player

Last time I played Commander in a full group with my friends, we did this. I downloaded the "Planechase - MTG Companion" app so we had all the planes available. It was fun, I'd do it again.

I have yet to get any planechase cards to try out with my friends but it does look fun

My group plays with the planechase. It’s fun, adds another element of randomness that can lead to interesting situations and strategies