Whenever an opponent shuffles their library, you may put a +1/+1 counter on this creature.

Tap an untapped Merfolk you control: Target player mills a card.

Flying Whenever this creature attacks or blocks, untap target permanent.

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

Level up {1} ({1}: Put a level counter on this. Level up only as a sorcery.) LEVEL 2-3 3/3 Flying LEVEL 4+ 4/4 Flying Other Merfolk creatures you control get +1/+1.

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

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

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

Spells your opponents cast that target a Merfolk you control cost {2} more to cast. Abilities your opponents activate that target a Merfolk you control cost {2} more to activate.

Level up {U} ({U}: Put a level counter on this. Level up only as a sorcery.) LEVEL 4-6 2/4 LEVEL 7+ 3/5 At the beginning of each end step, if it's not your turn, take an extra turn after this one.

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.)

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) All lands are Islands in addition to their other types. Creatures without flying or islandwalk can't attack.

When this creature enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your library and the rest on the bottom of your library in a random order. If X is greater than or equal to the number of cards in your library, you win the game. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)

Flash When this creature enters, counter up to one target activated or triggered ability. If an ability of an artifact, creature, or planeswalker is countered this way, that permanent loses all abilities for as long as this creature remains on the battlefield. (Mana abilities can't be targeted.)

Whenever you draw a card, you may pay {1}. When you do, you may tap or untap target creature.

Defender (This creature can't attack.) Tap an untapped Merfolk you control: This creature can attack this turn as though it didn't have defender. Tap an untapped Merfolk you control: This creature gets +2/+1 until end of turn. When this creature dies, destroy all Merfolk tapped this turn to pay for its abilities.

{U}{U}, {T}: Gain control of target legendary permanent. (This effect lasts indefinitely.)

Whenever a player casts a blue spell, you may gain 1 life.

Draw a card for each tapped creature target opponent controls.

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.

Draw a card for each Island you control, then discard two cards.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Whenever a Merfolk you control deals combat damage to a player, draw a card.

Hexproof Lieutenant — As long as you control your commander, this creature gets +2/+2 and has "Whenever this creature becomes blocked, you may draw two cards."

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

Flying When this creature enters, reveal the top three cards of your library. Put all Island cards revealed this way into your hand and the rest on the bottom of your library in any order.

Until end of turn, you may tap lands you don't control for mana. Spend this mana only to cast spells.

Blue spells you cast cost {1} less to cast.

Take an extra turn after this one. Skip the untap step of that turn.

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

Whenever you cast a Merfolk spell, create a 1/1 blue Merfolk creature token with hexproof. (A creature with hexproof can't be the target of spells or abilities your opponents control.)

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

Flash (You may cast this spell any time you could cast an instant.) Enchant creature Enchanted creature loses all abilities and is a black Skeleton creature with base power and toughness 1/1. (It loses all other colors, card types, and creature types.)

As this enchantment enters, choose a creature type. Whenever a creature you control of the chosen type enters or attacks, draw a card.

{T}: Add {C}. {1}, {T}: Until end of turn, creatures your opponents control lose hexproof and shroud and can't have hexproof or shroud.

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

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}.

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}.

This land enters tapped. {T}: Add {U}. {4}{U}, {T}, Sacrifice this land: Discover 4. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

({T}: Add {U}.)

This land enters tapped. {T}: Add {C}. {2}{C}, {T}, Sacrifice this land: Copy target instant or sorcery spell you control. You may choose new targets for the copy. {4}{C}, {T}, Sacrifice this land: Create a token that's a copy of target creature you control.

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

({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.

{T}: Add {U}. Channel — {3}{U}, Discard this card: Return target artifact, creature, enchantment, or planeswalker to its owner's hand. This ability costs {1} less to activate for each legendary creature you control.

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

This land enters tapped with two depletion counters on it. {T}, Remove a depletion counter from this land: Add {U}{U}. If there are no depletion counters on this land, sacrifice it.

Counter target spell.

You may return two Islands you control to their owner's hand rather than pay this spell's mana cost. Tap all creatures.

Flash This spell can't be countered. Whenever you cast a spell, choose up to one — • Return target spell you don't control to its owner's hand. • Return target nonland permanent to its owner's hand.

Return all nonblue creatures to their owners' hands.

Strive — This spell costs {U} more to cast for each target beyond the first. Return any number of target enchantments to their owners' hands.

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.

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.)

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.)

Kicker {X}. X can't be 0. (You may pay an additional {X} as you cast this spell.) Flying When this creature enters, if it was kicked, gain control of target artifact with mana value X or less. If that artifact is an Equipment, attach it to this creature.

Search your library for a card, then shuffle and put that card third from the top.

Search your library for a blue instant card, reveal that card, put it into your hand, then shuffle.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) When this creature enters, you may search your library for a Merfolk card, reveal it, then shuffle and put that card on top.