Famished Worldsire is a mythic Creature — Leviathan card from Edge of Eternities (EOE), collector number 341. Current market price: $7.21 (foil $8.53), TCGplayer market prices via Scryfall.
Ward {3} Devour land 3 (As this creature enters, you may sacrifice any number of lands. It enters with three times that many +1/+1 counters on it.) When this creature enters, look at the top X cards of your library, where X is this creature's power. Put any number of land cards from among them onto the battlefield tapped, then shuffle.