Great Ball (Regulation Mark: G) is not legal in Standard format
The other three, Deadly Dispute, Thrill of Possibility, and a Mountain, arent even worth $1 all together
Despite the fact that the first options commanders (Carth and Guff) have the word planeswalker written on them multiple times, I dont think I would actually choose them (for the record, I would build Guff as the control the board, slow tick-up and Carth as the counter shenanigans deck)
We know that when you are learning how to build a pokemon tcg deck for beginners , you want your components immediately
Love them here loads
This Soul Sister enchantment might have an argument for being better than Authority of the Consuls, since you can plan to play into it with your own creatures, but I think the stax effects from the Kaladesh rare might outclass it