{T}: Add one mana of any color in your commander's color identity. Sacrifice this artifact: Draw a card.

As this artifact enters, choose a color. Creatures you control of the chosen color get +1/+0. {T}: Add one mana of the chosen color.

As this artifact enters, choose a creature type. Creatures you control of the chosen type get +1/+1. {3}, {T}: Look at the top three cards of your library. You may reveal a creature card of the chosen type from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Blue creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step.

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

Whenever equipped creature deals combat damage to a player, you draw that many cards. Equip {4} Equip Shaman, Warlock, or Wizard {1}

This artifact enters tapped. {T}: Add {U}.

Equipped creature gets +1/+1 for each other creature you control that shares a creature type with it. Equip {2}

{2}, {T}, Sacrifice this artifact: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

As this creature enters, choose a creature type. This creature is the chosen type in addition to its other types. Other creatures you control of the chosen type get +1/+1.

Sacrifice this creature: Counter target instant or sorcery spell unless its controller pays {1}.

You may look at the top card of your library any time. You may cast Merfolk spells from the top of your library. Whenever you cast a Merfolk spell, you may pay {1}. If you do, create a 1/1 blue Merfolk creature token.

This creature can't be blocked. This creature gets +2/+0 as long as you control a commander that's a creature or planeswalker.

Whenever a spell or ability you control counters a spell, you may create a 1/1 blue Merfolk creature token. Tap seven untapped Merfolk you control: Counter target spell.

Other Merfolk creatures you control get +1/+1. {T}: Target Merfolk creature can't be blocked this turn.

Flash When this creature enters, tap target creature an opponent controls. It loses all abilities until end of turn.

Flying Whenever this creature deals combat damage to a player, that player mills a card. (They put the top card of their library into their graveyard.) Sacrifice this creature: Draw a card. Activate only if an opponent has eight or more cards in their graveyard.

Other Merfolk creatures you control get +1/+1. Whenever you cast a Merfolk spell, you may tap or untap target permanent.

Flying Other Merfolk you control get +1/+0 and have flying. Encore {5}{U}{U} ({5}{U}{U}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Sacrifice this creature: Until end of turn, if a nontoken creature would enter and it wasn't cast, exile it instead.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) {1}, {T}: Tap target land.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Merfolk spells and Wizard spells you cast cost {1} less to cast.

Svyelun has indestructible as long as you control at least two other Merfolk. Whenever Svyelun attacks, draw a card. Other Merfolk you control have ward {1}. (Whenever another Merfolk you control becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.)

When this creature enters, tap all creatures target opponent controls.

{T}: Target land becomes an Island until end of turn.

When this enchantment enters, create two 1/1 blue Merfolk creature tokens with hexproof. (They can't be the targets of spells or abilities your opponents control.) {3}{U}: Target Merfolk can't be blocked this turn.

Enchant creature Enchanted creature can't be blocked. Whenever enchanted creature attacks, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Whenever one or more nontoken Merfolk you control become tapped, create a 1/1 blue Merfolk creature token with hexproof.

Enchant creature, land, or planeswalker Enchanted permanent is a colorless land with "{T}: Add {C}" and loses all other card types and abilities.

At the beginning of your end step, untap all Merfolk you control.

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

Return all attacking creatures to their owner's hand.

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

Surveil 1. (Look at the top card of your library. You may put it into your graveyard.) Draw a card.

Counter target instant spell.

Untap all nonland permanents you control.

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

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

Counter target spell unless its controller pays {3}.

Counter target instant or sorcery spell. Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Choose three. You may choose the same mode more than once. • Counter target spell unless its controller pays {3}. • Return target creature to its owner's hand. • Draw a card.

Counter target noncreature spell.

Scry 1. (Look at the top card of your library. You may put that card on the bottom.) Draw a card.

Counter target spell. Draw a card, then discard a card.

Counter target spell. Untap up to four lands.

Counter target spell. Foretell {1}{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.)

Put a +1/+1 counter on target creature. It phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)

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

Counter target noncreature spell unless its controller pays {2}.

Counter target spell unless its controller pays {X}, where X is your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)

Target player mills two cards. Draw a card.

Cleave {1}{U}{U} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.) Counter target spell [that wasn't cast from its owner's hand].

{T}: Add {C}. {3}, {T}: Target creature with power 3 or less can't be blocked this turn.

This land enters tapped. When this land enters, return a land you control to its owner's hand. If another Desert was returned this way, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) {T}: Add {C}{C}.

This land enters tapped unless you control an Island. {T}: Add {U}. {2}{U}{U}, {T}: Scry 2.

{T}: Add {U}. This land deals 1 damage to you. Threshold — {U}, {T}, Sacrifice this land: Target player draws three cards, then discards three cards. Activate only if seven or more cards are in your graveyard.

When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) {T}: Add {C}. {1}, {T}: Add one mana of any color.

This land enters tapped. When this land enters, sacrifice it unless you return an untapped Island you control to its owner's hand. {T}: Add {C}{U}.

{T}: Add {C}. {3}, {T}, Sacrifice this land: Create a 2/2 black Zombie creature token. Activate only as a sorcery.

{T}: Add {C}. {T}: This land deals 1 damage to target attacking creature. Activate only during the end of combat step.

This land enters tapped. {T}: Add {U}. Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)

{T}: Add {C}. {3}: Return this card from your graveyard to the battlefield tapped.

{T}: Add {C}. When this land is put into a graveyard from the battlefield, create a 2/2 black Zombie creature token.

{T}: Add {C}. {2}, {T}: Exile target creature you control. {4}, {T}, Sacrifice this land: Return each creature card exiled with this land to the battlefield under its owner's control.

{T}: Add {C}. {1}, {T}, Sacrifice this land: Put a -1/-1 counter on target creature. Activate only as a sorcery.

This land enters tapped. When this land enters, look at the top three cards of your library, then put them back in any order. {T}: Add {U}.

{T}: Add {C}. {2}, Exile a land card from your graveyard: This land becomes a 3/4 Elemental creature until end of turn. It's still a land.

{T}: Add {C}. {T}, Pay 1 life: Add {U}. {1}{U}, {T}, Sacrifice a Desert: Target player mills four cards. (They put the top four cards of their library into their graveyard.)

({T}: Add {U}.)

{T}: Add {C}. {4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

This land enters tapped. {T}: Add {U}. Cycling {U} ({U}, Discard this card: Draw a card.)

({T}: Add {U}.) This land enters tapped. {U}, {T}: Look at the top card of target player's library. Activate only if you control two or more blue permanents.

({T}: Add {U}.) This land enters tapped unless you control three or more other Islands. When this land enters untapped, you may put target instant or sorcery card from your graveyard on top of your library.

If a spell or ability an opponent controls causes you to discard a card, you may reveal that card and put it on top of your library instead of putting it anywhere else. {T}: Add {C}.

You have no maximum hand size. {T}: Add {C}.

This land enters tapped. {T}: Add {U}. Cycling {2} ({2}, Discard this card: Draw a card.)

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

{T}: Add {C}. {3}, {T}: Target creature can't block this turn. Activate only as a sorcery.

{T}: Add {C}. {2}, {T}, Sacrifice a Desert: Exile all graveyards.

This land enters tapped. When this land enters, target creature an opponent controls doesn't untap during its controller's next untap step. {T}: Add {U}.

When this land enters, it deals 1 damage to target player or planeswalker. {T}: Add {C}.

{T}: Add {C}{C}. Activate only if you control five or more lands.

When The Grey Havens enters, scry 1. {T}: Add {C}. {T}: Add one mana of any color among legendary creature cards in your graveyard.

This land enters tapped. {T}: Add {U}. {1}{U}, {T}, Sacrifice this land: Draw a card.

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.

Draw two cards. Then discard a card unless you attacked this turn.

This spell has flash as long as you control a Merfolk. Return target creature to its owner's hand. Draw a card.

Choose a creature type. Draw a card for each permanent you control of that type.

Target creature can't be blocked this turn. Draw a card.

Draw a card for each Island you control.

Scry 2, then draw a card. (To 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.)

Kicker {5} (You may pay an additional {5} as you cast this spell.) Create a token that's a copy of target creature. If this spell was kicked, create five of those tokens instead.