At the beginning of your end step, put a +1/+1 counter on each creature you control and a loyalty counter on each planeswalker you control.

Whenever another Merfolk you control enters, put a +1/+1 counter on target Merfolk you control.

Landfall — Whenever a land you control enters, choose one — • Create a 2/2 white Cat Beast creature token. • Put a +1/+1 counter on each creature you control. Those creatures gain vigilance until end of turn.

Flying When this creature enters, put a +1/+1 counter on target creature you control. {3}{G}{U}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Other Merfolk you control get +1/+1.

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

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

Kicker—Return a creature you control to its owner's hand. (You may return a creature you control to its owner's hand in addition to any other costs as you cast this spell.) If this creature was kicked, it enters with a +1/+1 counter on it.

{U}: Return this creature to its owner's hand.

Whenever a nontoken creature you control enters, if it doesn't have the same name as another creature you control or a creature card in your graveyard, draw a card.

When this creature enters, it explores, then it explores again. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard. Then repeat this process.)

Landfall — Whenever a land you control enters, you gain 1 life and draw a card.

Creatures don't untap during their controllers' untap steps. Whenever a creature enters, untap all creatures.

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.

{T}: This creature deals 1 damage to any target.

Whenever this creature becomes tapped, you may create a 1/1 blue Merfolk Wizard creature token.

Whenever a permanent you control becomes untapped, this creature gets +1/+1 until end of turn.

Whenever a creature you control enters, you may destroy target artifact or enchantment.

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Counter target spell.

This spell can't be countered. Counter target noncreature spell.

You may cast this card as though it had flash if you pay {2} more to cast it. (You may cast it any time you could cast an instant.) When this creature enters, you may return target tapped creature an opponent controls to its owner's hand.

{W}, {T}: This creature deals X damage to target attacking or blocking creature, where X is the number of Merfolk you control.

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

Destroy target artifact or enchantment. Its controller gains 4 life.

Counter target noncreature spell.

{3}{U}, {T}, Discard a card: Untap target creature and gain control of it until end of turn. That creature gains haste until end of turn.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

{U}: This creature gains flying until end of turn. Whenever this creature deals combat damage to a player, you may pay {2}. If you do, search that player's library for a card and exile it, then the player shuffles.

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.

{1}{U}, Tap two untapped Wizards you control: Copy target instant or sorcery spell. You may choose new targets for the copy.

Exile target creature. Its controller gains life equal to its power.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Whenever Thada Adel deals combat damage to a player, search that player's library for an artifact card and exile it. Then that player shuffles. Until end of turn, you may play that card.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {W}{U}.

When this land enters, sacrifice it. When you do, search your library for a basic Forest, Plains, or Island card, put it onto the battlefield tapped, then shuffle and you gain 1 life.

({T}: Add {G} or {W}.) This land enters tapped unless you control two or more basic lands.

{T}: Add one mana of any color in your commander's color identity.

{T}: Add one mana of any color that a land an opponent controls could produce.

({T}: Add {G}.)

({T}: Add {U}.)

({T}: Add {W}.)

({T}: Add {W} or {U}.) This land enters tapped unless you control two or more basic lands.

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

This land enters tapped. {T}: Add {G}, {W}, or {U}.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {G}{W}.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {G}{U}.

As this land enters, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

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.)

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.

When this creature enters, create a 1/1 blue Merfolk creature token with hexproof. (It can't be the target of spells or abilities your opponents control.)

Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield. {3}, {T}: Create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.)

As this enchantment enters, choose a creature type. Whenever you cast a spell of the chosen type, copy that spell. (A copy of a permanent spell becomes a token.)

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.

Flash When this creature enters, you may exile target historic permanent you control. If you do, return that card to the battlefield under its owner's control at the beginning of the next end step. (Artifacts, legendaries, and Sagas are historic.)

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}.)

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and {T} no matter when it came under your control.) Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) {1}{W}: Target Merfolk you control gains protection from the color of your choice until end of turn.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

{T}: Untap another target permanent.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

{T}: Add {C}. {1}, {T}: Add {U}.

Landfall — Whenever a land you control enters, equipped creature gets +2/+2 until end of turn. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Whenever you draw your second card each turn, create a 2/2 blue Drake creature token with flying. Whenever you draw your fifth card each turn, Alandra and Drakes you control each get +X/+X until end of turn, where X is the number of cards in your hand.

Tishana's power and toughness are each equal to the number of cards in your hand. You have no maximum hand size. When Tishana enters, draw a card for each creature you control.

When this creature enters, you may search your library for a Merfolk card, reveal it, then shuffle and put that card on top. Whenever another Merfolk you control enters, put a +1/+1 counter on this creature.

Flying {8}: Creatures you control gain flying until end of turn.

Any player may cast creature spells with mana value 3 or less without paying their mana costs and as though they had flash.

{T}, Sacrifice a creature: This artifact deals 1 damage to any target. Whenever a creature enters, you may untap this artifact.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Whenever this creature deals combat damage to a player, you may draw that many cards.

Whenever a creature you control enters, you may look at the top X cards of your library, where X is that creature's power. If you do, put one of those cards on top of your library and the rest on the bottom of your library in any order.

Blue creatures you control can't be blocked.

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

This artifact enters with X charge counters on it, where X is your life total. Landfall — Whenever a land you control enters, you may have your life total become the number of charge counters on this artifact.

Flying

Protection from red

Creatures you control with +1/+1 counters on them can't be blocked.

+1: Untap up to one target creature and up to one target land. −2: Reveal the top four cards of your library. You may put a creature card and/or a land card from among them into your hand. Put the rest into your graveyard. −8: You get an emblem with "Whenever a creature you control enters, you may have it fight target creature." Then create three 8/8 blue Octopus creature tokens.

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

Whenever a player casts a spell, that player returns a land they control to its owner's hand.

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

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

When this creature enters, exile all artifact and enchantment cards from all graveyards. When this creature leaves the battlefield, return all artifact and enchantment cards from all graveyards to their owners' hands.

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

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.

This creature can't be blocked. When this creature enters, return a creature you control to its owner's hand.