The other two are certainly both very playable in cube and easy enough to support
Throw in Bonecrusher Giant, which is just a generically good four-power creature, and you have a list thats very much capable of playing a fair creature combat game
"The earth shook, the sky rained fire, and it seemed the world was ending."
When you do, enchanted creature fights up to one target creature you don't control
Sure, there's still power creep, there always will be in products designed (at least in part) around Commander
The game itself is incredibly straightforward and, like the previously covered Flesh and Blood, Lorcana and Star Wars Unlimited, has its own way of ensuring that players can steadily bring more and more powerful cards into play as the game progresses, without being subject to the problem of not having enough resources to do so