Enchant creature card in a graveyard

When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it.

Enchanted creature gets -1/-0.

{U}, {T}: Add {C}{C}{C}.

Enchant creature

Whenever enchanted creature deals damage to you, Backfire deals that much damage to that creature's controller.

As Black Vise enters the battlefield, choose an opponent.

At the beginning of the chosen player's upkeep, Black Vise deals X damage to that player, where X is the number of cards in their hand minus 4.

Return target permanent to its owner's hand.

Draw three cards, then put two cards from your hand on top of your library in any order.

When Brine Hag dies, change the base power and toughness of all creatures that dealt damage to it this turn to 0/2. (This effect lasts indefinitely.)

Enchant creature

You control enchanted creature.

Counter target spell.

As Cursed Rack enters the battlefield, choose an opponent.

The chosen player's maximum hand size is four.

Dandân can't attack unless defending player controls an Island.

When you control no Islands, sacrifice Dandân.

Trample

At the beginning of your upkeep, sacrifice Deep Spawn unless you mill two cards.

{U}: Deep Spawn gains shroud until end of turn and doesn't untap during your next untap step. Tap Deep Spawn. (A creature with shroud can't be the target of spells or abilities.)

Search your library for a card, put that card into your hand, then shuffle.

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

{3}, {T}: Target player discards a card. Activate only during your turn.

{B}: Regenerate Drowned.

Players play with the top card of their libraries revealed.

Flying

{U}{U}{U}: Regenerate Ghost Ship.

You may choose not to untap Giant Oyster during your untap step.

{T}: For as long as Giant Oyster remains tapped, target tapped creature doesn't untap during its controller's untap step, and at the beginning of each of your draw steps, put a -1/-1 counter on that creature. When Giant Oyster leaves the battlefield or becomes untapped, remove all -1/-1 counters from the creature.

Giant Shark can't attack unless defending player controls an Island.

Whenever Giant Shark blocks or becomes blocked by a creature that has been dealt damage this turn, Giant Shark gets +2/+0 and gains trample until end of turn.

When you control no Islands, sacrifice Giant Shark.

Giant Tortoise gets +0/+3 as long as it's untapped.

{T}: Look at target player's hand.

{1}, {T}: Tap target artifact, creature, or land.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Island Fish Jasconius doesn't untap during your untap step.

At the beginning of your upkeep, you may pay {U}{U}{U}. If you do, untap Island Fish Jasconius.

Island Fish Jasconius can't attack unless defending player controls an Island.

When you control no Islands, sacrifice Island Fish Jasconius.

{4}, {T}: Draw a card.

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

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

{T}: Destroy target creature with islandwalk.

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

{X}, {T}: Choose a card name. Target opponent reveals X cards at random from their hand. Then that player discards all cards with that name revealed this way. Activate only during your turn.

{T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That creature attacks this turn if able. Destroy it at the beginning of the next end step if it didn't attack this turn. Activate only during an opponent's turn, before attackers are declared.

{T}: Untap target blue creature.

{T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That creature attacks this turn if able. Destroy it at the beginning of the next end step if it didn't attack this turn. Activate only before attackers are declared.

Enchant land

As Phantasmal Terrain enters the battlefield, choose a basic land type.

Enchanted land is the chosen type.

Pirate Ship can't attack unless defending player controls an Island.

{T}: Pirate Ship deals 1 damage to any target.

When you control no Islands, sacrifice Pirate Ship.

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

{T}: Add {U}.

{T}: Prodigal Sorcerer deals 1 damage to any target.

Discard X cards, then return a card from your graveyard to your hand for each card discarded this way. Exile Recall.

Whenever Reef Pirates deals damage to an opponent, that player mills a card.

Counter target creature spell.

{T}: Add {B}.

{U}: River Merfolk gains mountainwalk until end of turn. (It can't be blocked as long as defending player controls a Mountain.)

{T}, Sacrifice an artifact: Draw a card.

Sea Serpent can't attack unless defending player controls an Island.

When you control no Islands, sacrifice Sea Serpent.

{U}: Sea Spirit gets +1/+0 until end of turn.

Flying, protection from red

{U}: Regenerate Sea Troll. Activate only if Sea Troll blocked or was blocked by a blue creature this turn.

When you control no Islands, sacrifice Seasinger.

You may choose not to untap Seasinger during your untap step.

{T}: Gain control of target creature whose controller controls an Island for as long as you control Seasinger and Seasinger remains tapped.

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

{T}: Draw a card and reveal it. If it isn't a land card, discard it.

When you control no Islands, sacrifice Skeleton Ship.

{T}: Put a -1/-1 counter on target creature.

{T}: Add {C}{C}.

{U}: Regenerate Spiny Starfish.

At the beginning of each end step, if Spiny Starfish regenerated this turn, create a 0/1 blue Starfish creature token for each time it regenerated this turn.

Enchant artifact

You control enchanted artifact.

{U}{U}, {T}: Target creature gains shroud until end of turn. Activate only during your upkeep. (It can't be the target of spells or abilities.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

When Time Elemental attacks or blocks, at end of combat, sacrifice it and it deals 5 damage to you.

{2}{U}{U}, {T}: Return target permanent that isn't enchanted to its owner's hand.

Return target creature to its owner's hand.

{T}, Sacrifice a creature and a Swamp: Destroy target nonartifact creature. It can't be regenerated.

{T}, Sacrifice a creature and a snow Swamp: Destroy target creature. It can't be regenerated.

First strike

Vodalian Knights can't attack unless defending player controls an Island.

When you control no Islands, sacrifice Vodalian Knights.

{U}: Vodalian Knights gains flying until end of turn.

Defender (This creature can't attack.)

Prevent all damage that would be dealt to Wall of Vapor by creatures it's blocking.

Defender (This creature can't attack.)

{U}: Wall of Water gets +1/+0 until end of turn.

Water Wurm gets +0/+1 as long as an opponent controls an Island.

Flying, vigilance

Players play with their hands revealed.

If a player would draw a card, they reveal it instead. Then any other player may pay 2 life. If a player does, put that card into its owner's graveyard. Otherwise, that player draws a card.