Dragonlord Atarka is a mythic Legendary Creature — Elder Dragon card from Tarkir: Dragonstorm Commander (TDC), collector number 285. Current market price: $0.38, TCGplayer market prices via Scryfall.
Flying, trample When Dragonlord Atarka enters, it deals 5 damage divided as you choose among any number of target creatures and/or planeswalkers your opponents control.