Old Flitterfang gives you Food on each end step if a creature died that turn, including your opponents turns and creatures, and it has a built-in sac outlet
14x Swamps
Then, Madam Mim can bounce him safely back into your hand, setting up a vicious cycle that, if it isn't stopped, can give you a huge lore lead
While the daybound/nightbound rules have unfortunately overridden forced transformation, Immerwolfs second ability still works on nightbound Werewolves, thanks to Magic s general rule of cant overrules can. Werwlfe fr immer
Being able to seek out any Demon card from your deck and placing it directly into play (not a Most Valuable Devil, mind you) by sacrificing six Shadowborn Apostles remains a pretty sweet deal despite this card debuting over 10 years ago in Magic 2014
Predation Steward I can see someone talking about how you can use this to pump stuff, but it's too slow, too expensive, and generally will too often be too limited in its uses