Where Kari Zev will truly shine is if there is a good way to take advantage of the extra creature she creates each time she attacks, maybe by having a Yahenni, Undying Partisan and Zulaport Cutthroat on the battlefield
You might get a bunch of powerful creatures which can attack your opponent, but playing those creatures requires skill and strategy to establish the correct amount of playable mana
And all the Voltron synergy that you have mentioned above works here with our first Red entry into the list
Kieran Special Illustration Rare 218/167 While Kierans Special Illustration Rare was one of the most expensive in Japans parallel set, Mask of Change, its Twilight Masquerade counterpart is a far cry from the kind of value we see from the thematically similar Carmine Special Illustration Rare
Especially for red, which likes strong reactive plays, sacrificing the ability to play on your opponents' turns may just be a bit too much
While it is still a bargain for what it does you do not need it to do as much as it does
