Omnath, Locus of Rage is a mythic Legendary Creature — Elemental card from The List (PLST), collector number BFZ-217. Current market price: $9.48, TCGplayer market prices via Scryfall.
Landfall — Whenever a land you control enters, create a 5/5 red and green Elemental creature token. Whenever Omnath or another Elemental you control dies, Omnath deals 3 damage to any target.