one piece booster box op11 OP-11 Whats more Sealed Japanese OP-11 A Fist

Aetherstorm RocAetherstorm Roc, Aethersquall AncientAethersquall Ancient, and Roil CartographerRoil Cartographer all do a great job of making large amounts of energy, while Lightning RunnerLightning Runner, Aetherworks MarvelAetherworks Marvel, and Stone Idol GeneratorStone Idol Generator provide some of the best uses for it

Reckoner Bankbuster is getting the axe for its ubiquity as the strongest colorless card-advantage tool in the format

Unfortunately, no, none of the My Little Pony cards are legal in any format

Wizards was even kind enough to provide proxies of the two Angel Horrors so you don't need to take them out of their sleeves when melding into the big bad 9/10