i wanted to put her in my Siona historic brawl deck but its just a win more card unfortunately maybe there is a build that focuses less on enchantment auras that can use her well as a commander she is to expensive i think for what she does :/ might only work with a ramp deck but there are no green/white big value enchantments... overwhelming splendor and miraris wake are probably the best ones if one does the ramp thing. the god route seems the best one...
I think that yenna appears to be a fair commander for a rare, their‘s a lot of protection in these colors so she can stick around for a turn cycle and then use her ability. Gods are definitely one of the better targets in my opinion, but due to her untap and scry on aura copies she‘s most likely intended as an aura commander/addition. I don’t see her doing well in brawl as your opponent is focused on you and can only handle your threats
