Falters are too situational to run without a buyout, and MDFCs are the ultimate buyouts
We've added a ton of sweet planeswalkers to the deck, all of which care about running lots of, like Domri, Anarch of Bolas
You should pick Shu Yun if
Then, all of a sudden after Jumpstart came out we had our first legendary unicorn (besides the two changelings mentioned above)
Partner (You can have two commanders if both have partner.) Legendary Creature - Human Warrior Commander (CTRL to add secondary) Artifact Bitterthorn, Nissa's Animus Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +1/+1
Elrond, Lord of Rivendell would be a great addition to a control or tempo deck in Magic: the Gathering, as his scry ability can help you set up your draws and maintain card advantage