Avenger of Zendikar is a mythic Creature — Elemental card from Modern Horizons 3 Commander (M3C), collector number 221. Current market price: $0.50, TCGplayer market prices via Scryfall.
When this creature enters, create a 0/1 green Plant creature token for each land you control. Landfall — Whenever a land you control enters, you may put a +1/+1 counter on each Plant creature you control.