Singles

Flying (This creature can't be blocked except by creatures with flying or reach.)

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

Return target sorcery card from your graveyard to your hand.

Draw three cards.

Creatures and lands target opponent controls don't untap during their next untap step.

Tap all blue creatures.

Draw a card for each tapped creature target opponent controls.

When Denizen of the Deep enters the battlefield, return each other creature you control to its owner's hand.

When Denizen of the Deep enters the battlefield, return each other creature you control to its owner's hand.

First strike, protection from red

As Psychic Allergy enters the battlefield, choose a color. At the beginning of each opponent's upkeep, Psychic Allergy deals X damage to that playe...

Counter target spell.

If target opponent has more cards in hand than you, draw cards equal to the difference.

All creatures lose flying and islandwalk.

{T}: Return Coastal Wizard and another target creature to their owners' hands. Activate this ability only during your turn, before attackers are de...

{W}, {T}: Prevent the next 2 damage that would be dealt to target creature this turn. Target opponent may draw a card.

Armored Galleon can't attack unless defending player controls an Island.

Each player may discard up to three cards. Mind Bomb deals damage to each player equal to 3 minus the number of cards they discarded this way.

Defender (This creature can't attack.) Tap an untapped Merfolk you control: Vodalian War Machine can attack this turn as though it didn't have defe...

Flying At the beginning of your upkeep, put a +1/+1 counter on Phantasmal Sphere, then sacrifice Phantasmal Sphere unless you pay {1} for each +1/+...

{T}: Apprentice Sorcerer deals 1 damage to any target. Activate this ability only during your turn, before attackers are declared.

{T}: Destroy target creature with islandwalk.

Voler