Mana Leak

Counter target spell unless its controller pays {3}.

Counterspell

Preordain

Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Briarberry Cohort

Flying
Briarberry Cohort gets +1/+1 as long as you control another blue creature.

Vapor Snag

Return target creature to its owner's hand. Its controller loses 1 life.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Spellstutter Sprite

Flash
Flying
When Spellstutter Sprite enters, counter target spell with mana value X or less, where X is the number of Faeries you control.

Unsummon

Return target creature to its owner's hand.

Distant Melody

Choose a creature type. Draw a card for each permanent you control of that type.

Latchkey Faerie

Flying
Prowl {2}{U} (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Faerie or Rogue.)
When Latchkey Faerie enters, if its prowl cost was paid, draw a card.

Sunken City

At the beginning of your upkeep, sacrifice Sunken City unless you pay {U}{U}.
Blue creatures get +1/+1.

Annul

Counter target artifact or enchantment spell.

Fencer Clique

Flying
{U}: Put Fencer Clique on top of its owner's library.

Spire Golem

Affinity for Islands (This spell costs {1} less to cast for each Island you control.)
Flying

Island

Surveilling Sprite

Flying
When Surveilling Sprite dies, you may draw a card.

Pestermite

Flash
Flying
When Pestermite enters, you may tap or untap target permanent.

Faerie Miscreant

Flying
When Faerie Miscreant enters, if you control another creature named Faerie Miscreant, draw a card.