Dromoka, the Eternal is a rare Legendary Creature — Dragon card from Magic Origins Clash Pack (CP3), collector number 4. Current market price: — (foil $1.74), TCGplayer market prices via Scryfall.
Flying Whenever a Dragon you control attacks, bolster 2. (Choose a creature with the least toughness among creatures you control and put two +1/+1 counters on it.)