Omnath, Locus of Rage is a mythic Legendary Creature — Elemental card from Battle for Zendikar Promos (PBFZ), collector number 217p. Current market price: $3.61 (foil $9.27), 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.