mtg 2019 commander precon Magic: The Gathering Faceless Menace Deck | 100-Card Ready-to-Play Deck Morphing and the Populace: Reviewing

Also, Teferi can allow you to untap permanents that offer powerful effects to use them again

Combine the two abilities with some effect that will let you make mana like Ashnods Altar and Pitiless Plunderer, which will net you six mana when you sacrifice them all between the Altar and Treasure tokens

Are you seeing a pattern

As for decks that this could slot in, some fun jund sacrifice matters decks like Korvold, Fae Cursed King, or Vaevictis Asmadi, the Dire would make good use of this recurring bird

For me, if you go to the tournament saying lets see what I will open, it just means that you didnt work enough