Aetherstorm Roc [Kaladesh]

Aetherstorm Roc [Kaladesh]Set: Kaladesh Type: Creature Bird Rarity: Rare Cost: {2}{W}{W} Flying Whenever Aetherstorm Roc or another creature enters the battlefield under your control, you get {E} (an energy counter). Whenever Aetherstorm Roc attacks, you may pay {E}{E}. If you do, put a +1 +1 counter on it and tap up to one target creature defending player controls.

if it was historic

the Sky Asunder deals X damage to target creature with flying

You might leave here

I did not step down

It doesn't untap during its controller's next untap step

Whenever a land's ability causes you to add one or more mana of the chosen color

Cunning Type: Legendary Creature — Goblin Warrior Rarity: Rare Cost: {2}{R}{R} {T}: Create X 1/1 red Goblin creature tokens

ripping the skies with wind and rain

Every ancient relic is a weapon if you throw it hard enough

for fear of the judgment that might be contained within

Lots of books

Set: Commander Anthology Type: Creature — Elemental Beast Rarity: Rare Cost: {5}{G} When Grave Sifter enters the battlefield