Think Twice

Draw a card.
Flashback {2}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Advanced Stitchwing

Flying
{2}{U}, Discard two cards: Return this card from your graveyard to the battlefield tapped.

Mirrorshell Crab

Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.)
Channel — {2}{U}, Discard this card: Counter target spell or ability unless its controller pays {3}.

Counterspell

Foil

You may discard an Island card and another card rather than pay this spell's mana cost.
Counter target spell.

Deep Analysis

Target player draws two cards.
Flashback—{1}{U}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Dispel

Faerie Macabre

Flying
Discard this card: Exile up to two target cards from graveyards.

Snap

Return target creature to its owner's hand. Untap up to two lands.

Blue Elemental Blast

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Argivian Restoration

Return target artifact card from your graveyard to the battlefield.

Force Spike

Counter target spell unless its controller pays {1}.

Island

Spire Golem

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

Fade Away

For each creature, its controller sacrifices a permanent of their choice unless they pay {1}.