Ethereal Elk is a rare Creature — Elk Spirit card from Core Set 2020 (M20), collector number 299. Current market price: $0.26, TCGplayer market prices via Scryfall.
Trample When this creature enters, you may search your library and/or graveyard for a card named Vivien, Nature's Avenger, reveal it, and put it into your hand. If you search your library this way, shuffle.