It's especially a timely time to tackle Zombies, as we're seeing a ton of people building the tribe right now thanks in large part to this card: Look, Zombies have no shortage of Commanders to choose from, but Wilhelt, the Rotcleaver is still a cool new toy
Ignore the fact that you also have the Ephemerate is Plague Wind side of this or the this is all costlessly attached to a Shriekmaw body so theres not a real cost to playing it, why are we so interested in telling people they dont deserve to control any creature they hope survives
It could help you stabilize versus aggro though, especially if you can trade off the body afterwards
The 6/6 is also an improvement on all but five other power/toughness combinations
For sacrifice fodder we've got self-recurring fodder like Cult Conscript, hand discard like Burglar Rat, and removal like Ravenous Chupacabra