Aetherstream Leopard

Aetherstream Leopard

Creature - Cat | Power/Toughness: 2 / 3 (CMC 3)
Trample
When Aetherstream Leopard enters the battlefield, you get (an energy counter).
Whenever Aetherstream Leopard attacks, you may pay . If you do, it gets +2/+0 until end of turn.