AEther, +Storm (2)
Creature spells can't be cast.
Pay 4 life: Destroy Aether Storm. It can't be regenerated. Any player may activate this ability.
Flying
Whenever Aetherstorm Roc or another creature you control enters, you get (an energy counter).
Whenever Aetherstorm Roc attacks, you may pay . If you do, put a +1/+1 counter on it and tap up to one target creature defending player controls.
Gatherer works better in the Companion app!