Counterspell

Spell Counter

Counter target spell.
Gotcha — If an opponent says "spell" or "counter," you may say "Gotcha!" When you do, return Spell Counter from your graveyard to your hand.

Essence Scatter

Temporal Adept

{U}{U}{U}, {T}: Return target permanent to its owner's hand.

Wonder

Flying
As long as Wonder is in your graveyard and you control an Island, creatures you control have flying.

Negate

Careful Study

Future Sight

Play with the top card of your library revealed.
You may play lands and cast spells from the top of your library.

Llawan, Cephalid Empress

When Llawan, Cephalid Empress enters, return all blue creatures your opponents control to their owners' hands.
Your opponents can't cast blue creature spells.