While there technically was a couple of dinosaur cards back in the 90s, this creature type didnt start to see major printings until Ixalan
Although your exerted characters will still be susceptible to getting challenged, Aurora can defend them from actions with her ability
But Final Fantasy introduced sagas that are also creatures, which could be targeted with effects like Tishana's Tidebinder, Fresh Start, or Unable to Scream (since these all affect creatures)
With this commander, you dont need anything special to do it, as long as you keep track of whether her power is even or odd
They did share, however, that Mickey and Minnie will be the very first Iconic Cards
This reminds me of Kona, Rescue Beastie in terms of the risk/reward involved, but a little bit weaker overall