Plus, its one of still just a few cards to reliably copy permanent spells and for most colors it will probably remain their only way
And opponents are going to be wary about killing your commander due to the threat of you replaying it, transforming it, and getting even more emblems
If you brought in a non-creature permanent to dodge a powerful removal suite, they couldnt kill it with the same card that killed your one-drop
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Commander players generally dont want to waste their entire turn of mana just to remove one creature unless they are about to lose the game
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