
At the beginning of your end step, manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)
Sacrifice this creature: Until end of turn, face-up nontoken creatures you control gain "When this creature dies, manifest the top card of your library."
Whisperwood Elemental has 4 printings, first in Fate Reforged (2015). EDHREC ranks it #6,059 among Commander cards. It appears most in Zimone, Mystery Unraveler decks (10,656 on EDHREC). 2 public decks on TCG run it. It has 14 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.