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Armored Galleon
{4}{U}
Creature -- Human Pirate
5/4
~this~ can't attack unless defending player controls an Island.

Dandan
{U}{U}
Creature -- Fish
4/1
~this~ can't attack unless defending player controls an Island.
When you control no Islands, sacrifice ~this~.

Deep-Sea Serpent
{4}{U}{U}
Creature -- Serpent
5/5
~this~ can't attack unless defending player controls an Island.

Dreamwinder
{3}{U}
Creature -- Serpent
4/3
~this~ can't attack unless defending player controls an Island.
{U}, Sacrifice an Island: Target land becomes an Island until end of turn.

Ethereal Whiskergill
{3}{U}
Creature -- Elemental
4/3
Flying
~this~ can't attack unless defending player controls an Island.

Floodchaser
{5}{U}
Creature -- Elemental
0/0
~this~ enters with six +1/+1 counters on it.
~this~ can't attack unless defending player controls an Island.
{U}, Remove a +1/+1 counter from ~this~: Target land becomes an Island until end of turn.

Giant Shark
{5}{U}
Creature -- Shark
4/4
~this~ can't attack unless defending player controls an Island.
Whenever ~this~ blocks or becomes blocked by a creature that has been dealt damage this turn, ~this~ gets +2/+0 and gains trample until end of turn.
When you control no Islands, sacrifice ~this~.

Hammerhead Shark
{1}{U}
Creature -- Shark
2/3
~this~ can't attack unless defending player controls an Island.

Island Fish Jasconius
{4}{U}{U}{U}
Creature -- Fish
6/8
~this~ doesn't untap during your untap step.
At the beginning of your upkeep, you may pay {U}{U}{U}. If you do, untap ~this~.
~this~ can't attack unless defending player controls an Island.
When you control no Islands, sacrifice ~this~.

Kukemssa Serpent
{3}{U}
Creature -- Serpent
4/3
~this~ can't attack unless defending player controls an Island.
{U}, Sacrifice an Island: Target land an opponent controls becomes an Island until end of turn.
When you control no Islands, sacrifice ~this~.

Manta Ray
{1}{U}{U}
Creature -- Fish
3/3
~this~ can't attack unless defending player controls an Island.
~this~ can't be blocked except by blue creatures.
When you control no Islands, sacrifice ~this~.

Marjhan
{5}{U}{U}
Creature -- Serpent
8/8
~this~ doesn't untap during your untap step.
{U}{U}, Sacrifice a creature: Untap ~this~. Activate only during your upkeep.
~this~ can't attack unless defending player controls an Island.
{U}{U}: ~this~ gets -1/-0 until end of turn and deals 1 damage to target attacking creature without flying.
When you control no Islands, sacrifice ~this~.

Merchant Ship
{U}
Creature -- Human
0/2
~this~ can't attack unless defending player controls an Island.
Whenever ~this~ attacks and isn't blocked, you gain 2 life.
When you control no Islands, sacrifice ~this~.

Pirate Ship
{4}{U}
Creature -- Human Pirate
4/3
~this~ can't attack unless defending player controls an Island.
{T}: ~this~ deals 1 damage to any target.
When you control no Islands, sacrifice ~this~.

Red Cliffs Armada
{4}{U}
Creature -- Human Soldier
5/4
~this~ can't attack unless defending player controls an Island.

Sea Monster
{4}{U}{U}
Creature -- Serpent
6/6
~this~ can't attack unless defending player controls an Island.

Sea Serpent
{5}{U}
Creature -- Serpent
5/5
~this~ can't attack unless defending player controls an Island.
When you control no Islands, sacrifice ~this~.

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

Serpent of the Endless Sea
{4}{U}
Creature -- Serpent
*/*
~this~'s power and toughness are each equal to the number of Islands you control.
~this~ can't attack unless defending player controls an Island.

Slipstream Eel
{5}{U}{U}
Creature -- Fish Beast
6/6
~this~ can't attack unless defending player controls an Island.
Cycling {1}{U} ({1}{U}, Discard ~this~: Draw a card.)