Sacrifice fodder often comes as tokens, especially from cards like Jadar, Ghoulcaller of Nephalia that produce them each turn
Alseid of Lifes Bounty Alseid of Life's Bounty wont attack often, but this kind of protective ability is vital in Commander since three players can remove your threats
This opens up a ton of new options for existing Commander decks built around the mechanic, and will likely create a few new decks, too
Getting it at the time of your choosing, in order to save your creature during combat, from a direct damage spell, or to kill an opponent with an unblocked creature is gravy on the train
This is a metagame-dependent card, but look, if your opponents are keen on ramping via Treasure or cracking lots of Clues/Food, you get to leech on that