mtg gate land cards 12x PLAINS basic lands (various art) FOIL - NM Gates in MTG: Rules, History,

Check out Geomancer's Gambit for a slightly more expensive version

The new version of Vampiric Feast looks like the Babadook is visiting one of his friends in the hospital

This is an excellent answer to both early aggression and massive green creatures and is an effect black is often glad to come by

Torment of Hailfire Torment of Hailfire is a way to turn a lot of mana into a win condition

If you really and truly want to stop your opponent from casting creature spells for a single turn (which is all that Aether Storm will last), you could look at Cease-Fire, Orims Chant, Silence, Brand of Ill Omen, or Ward of Bones