While I miss seeing it in tournament play, it still keeps Umezawas Jitte company in the colorless two-drop windmill slam slot in Cubes across the globe
Mizzix discounts the cost of your instants and sorceries more and more as long as you can cast bigger and bigger spells
For example, cards signed by certain professional players may be noteworthy
Mothman is the most popular legendary creature from Fallout, and it had one of the best Commander precons in recent years
You won't always be able to get both Madam Mim and Fairy Godmother to stick on the board long enough to pull this off, but with their reduced Shift cost of three and two-ink respectively, you'll likely get both of them down on the board at the same time fairly often
This is made more difficult to judge because Magics story has provided absolutely no information about the story of Ravnica beyond the four story spotlight cards (Guild Summit, Assassins Trophy, Fireminds Foresight, and Thousand-Year Storm), so we Vorthoses cant point to a line of text and see why this change in character and mechanics is warranted