Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

When this creature enters, scry 3. (Look at the top three cards of your library, then put any number of them on the bottom and the rest on top in any order.) Whenever this creature attacks, you may return another creature you control to its owner's hand. If you do, this creature can't be blocked this turn.

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.

This creature can't attack unless defending player controls an Island.

This creature can't attack unless there are seven or more cards in your graveyard.

This creature enters with six +1/+1 counters on it. This creature can't attack unless defending player controls an Island. {U}, Remove a +1/+1 counter from this creature: Target land becomes an Island until end of turn.

{5}{U}{U}: This creature can't be blocked this turn.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

This creature can't attack unless defending player controls an Island.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) This creature can't attack unless there are five or more Islands on the battlefield.

Trample This creature enters tapped. When this creature enters, sacrifice it unless you sacrifice five lands. This creature doesn't untap during your untap step. Whenever you play an Island, you may untap this creature.

This creature can't attack unless defending player controls an Island. This creature can't be blocked except by blue creatures. When you control no Islands, sacrifice this creature.

This creature can't be blocked as long as defending player controls an artifact.

This creature can't attack unless defending player controls an Island.

This creature can't attack unless defending player controls an Island. When you control no Islands, sacrifice this creature.

{T}: Target land becomes the basic land type of your choice until end of turn.

This creature can't attack unless defending player controls an Island. {5}{U}{U}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When this creature becomes monstrous, target land becomes an Island in addition to its other types.

Serpent of the Endless Sea's power and toughness are each equal to the number of Islands you control. This creature can't attack unless defending player controls an Island.

This creature can't attack unless defending player controls an Island. When you control no Islands, sacrifice this creature. Morph {5}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

This creature can't be blocked.

At the beginning of your end step, if you didn't play a land this turn, you may draw a card.

Flash (You may cast this spell any time you could cast an instant.) When this enchantment enters, scry 2, then draw a card. {2}{U}, Sacrifice this enchantment: 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.)

Enchant land When this Aura enters, draw a card. Enchanted land is an Island.

Enchant land (Target a land as you cast this. This card enters attached to that land.) Enchanted land is an Island.

Put a flood counter on target land. That land is an Island in addition to its other types for as long as it has a flood counter on it. If you control a Merfolk, draw a card.

Until end of turn, whenever a player taps an Island for mana, that player adds an additional {U}.

This creature can't be blocked. Suspend 9—{2}{U} (Rather than cast this card from your hand, you may pay {2}{U} and exile it with nine time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.) Whenever an opponent casts a spell, if this card is suspended, remove a time counter from it.

Trample Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Shroud (This creature can't be the target of spells or abilities.)

Creatures with power less than the number of Islands you control can't block this creature.

Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.) At the beginning of your upkeep, scry 1. {1}{U}: Target creature you control can't be blocked this turn.

When Brinelin enters and whenever you cast a spell with mana value 6 or greater, you may return target nonland permanent to its owner's hand. Partner (You can have two commanders if both have partner.)

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Whenever this creature attacks, you may exile target creature defending player controls until this creature leaves the battlefield. (That creature returns under its owner's control.)

When this creature enters, return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control.

When you control no Islands, sacrifice this creature. You may choose not to untap this creature during your untap step. {T}: Gain control of target creature whose controller controls an Island for as long as you control this creature and this creature remains tapped.

Return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control. Foretell {1}{U}{U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Whenever you draw a card, you may pay {1}. If you do, put a +1/+1 counter on this creature and create a 1/1 blue Tentacle creature token.