2 Sir Bedivere's Scales Ashnod's Altar If you are playing a sacrifice deck, Ashnod Altar is a staple of it
This is probably the first card that straight away gets rid of Ward (will it be a Black centric ability in the future?), but also Hexproof, Indestructible and Protections (again, a first on a creature?) Thats the main take here and why Shay made the list, but thats not all the card does
Kill any critter with two or less toughness regardless of regeneration or indestructibility, and then have the Ring tempt you
Braids, Arisen Nightmare is a commander that sacrifices permanents in order to put opponents in lose-lose scenarios
People are pulling out Phyrexian Arenas for Sign in Bloods and then I have someone else even better
It will add an interesting dynamic, especially if paired with the Unstoppable Slasher and Bloodletter of Aclazotz combo