Being able to sacrifice one of your creatures to draw a card is a nice way to respond at instant speed to a targeted removal spell
With that, you can have a character with a large lore, hit it with a lucky dime twice, and then have it quest for a total gain of three times its value
If you can get your hands on one for MSRP or even a little bit more than that, Id buy the deck without even thinking twice
I received an Illuna, Apex of Wishes mutate commander deck and the value pretty much matched/slightly exceeded the price
Protect yourself with the Invisible Womans Walls while building your noncreature enginethen its time to stretch, flame on, and clobber
This means you can sacrifice creatures on your opponent's turn to draw a card if you wish to do so