Territorial Aetherkite 
Creature — Cat Dragon
Flying, haste
When this creature enters, you get 
(two energy counters). Then you may pay one or more . When you do, this creature deals that much damage to each other creature.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL