Territorial Aetherkite is a rare Creature — Cat Dragon card from Aetherdrift Commander (DRC), collector number 28. Current market price: $0.21, TCGplayer market prices via Scryfall.
Flying, haste When this creature enters, you get {E}{E} (two energy counters). Then you may pay one or more {E}. When you do, this creature deals that much damage to each other creature.