Hydroblast

Choose one —
• Counter target spell if it's red.
• Destroy target permanent if it's red.

Helm of Awakening

Chain of Vapor

Return target nonland permanent to its owner's hand. Then that permanent's controller may sacrifice a land of their choice. If the player does, they may copy this spell and may choose a new target for that copy.

Lotus Petal

{T}, Sacrifice this artifact: Add one mana of any color.

Merchant Scroll

Search your library for a blue instant card, reveal that card, put it into your hand, then shuffle.

Cloud of Faeries

Flying
When this creature enters, untap up to two lands.
Cycling {2} ({2}, Discard this card: Draw a card.)

Annul

Counter target artifact or enchantment spell.

Frantic Search

Draw two cards, then discard two cards. Untap up to three lands.

Blue Elemental Blast

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

Impulse

Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Arcane Denial

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.
You draw a card at the beginning of the next turn's upkeep.

Sapphire Medallion

Blue spells you cast cost {1} less to cast.

Snap

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

Island

Brain Freeze

Target player mills three cards.
Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Meditate

Draw four cards. You skip your next turn.

Accumulated Knowledge

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.