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.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Look at the top seven cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.

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

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

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

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

Whenever Neerdiv becomes tapped, target player mills cards equal to its power. Whenever you cast a spell from your graveyard or activate an ability of a card in your graveyard, draw a card and put a +1/+1 counter on Neerdiv.

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

Look at the top three cards of your library, then put them back in any order. You may shuffle. Draw a card.

Flying Whenever an artifact you control enters, you may draw a card. If you do, discard a card.

This creature can't be blocked by green creatures. Whenever this creature deals damage to an opponent, you may draw a card. If you do, discard a card. {1}{U}: This creature gets +2/-2 until end of turn.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Draw three cards.

Whenever you cast your first spell during each opponent's turn, draw a card.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Flash Ward {2} Probing Telepathy — Whenever a creature entering under an opponent's control causes a triggered ability of that creature to trigger, you may copy that ability. You may choose new targets for the copy.

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

Eluge's power and toughness are each equal to the number of Islands you control. Whenever Eluge enters or attacks, put a flood counter on target land. It's an Island in addition to its other types for as long as it has a flood counter on it. The first instant or sorcery spell you cast each turn costs {U} (or {1}) less to cast for each land you control with a flood counter on it.

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

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

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

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

{T}: Add {C}. {2}, {T}, Sacrifice a token: Draw a card. {3}, {T}, Pay 1 life: Create a 1/1 blue Fish creature token. {4}, {T}: Create a Treasure token.

({T}: Add {U}.)

Return all attacking creatures to their owner's hand.

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the beginning of the next turn's upkeep.

Counter target spell.

Enchant creature Enchanted creature loses all abilities and is a blue Fish with base power and toughness 0/1.

Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before its other effects.) Return target creature an opponent controls to its owner's hand. If the gift was promised, instead return target nonland permanent an opponent controls to its owner's hand.

Counter target noncreature spell.

Destroy target creature. It can't be regenerated. Its controller creates a 3/3 green Ape creature token.

Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.

Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)

Counter target spell. Untap up to four lands.

Enchant creature When this Aura enters, tap enchanted creature and you create a 1/1 blue Fish creature token with "This token can't be blocked." Enchanted creature doesn't untap during its controller's untap step.

Flying

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

Flying Whenever this creature or another creature you control enters, tap target creature an opponent controls.

This creature can't attack unless defending player controls an Island. This creature can't be blocked except by blue creatures. When you control no Islands, sacrifice this creature.

Whenever you draw your second card each turn, this creature gains flying until end of turn.

Flying This creature enters tapped.

{2}{U}: Adapt 2. (If this creature has no +1/+1 counters on it, put two +1/+1 counters on it.)

Flying When this creature enters, draw a card, then discard a card.

Sunburst (This enters with a +1/+1 counter on it for each color of mana spent to cast it.) Flying

{1}{U}, Exile this card from your graveyard: Create a 1/1 blue Fish creature token with "This token can't be blocked." Activate only as a sorcery.

Equipped creature has "{1}, {T}, Tap Fishing Pole: Put a bait counter on Fishing Pole." Whenever equipped creature becomes untapped, remove a bait counter from this Equipment. If you do, create a 1/1 blue Fish creature token. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Whenever you draw a card, put a foreshadow counter on this enchantment. Remove eight foreshadow counters from this enchantment: Create an 8/8 blue Kraken creature token. Cycling {2} ({2}, Discard this card: Draw a card.)

When this creature dies, create a 3/3 blue Fish creature token with "When this token dies, create a 6/6 blue Whale creature token with 'When this token dies, create a 9/9 blue Kraken creature token.'"

Flash (You may cast this spell any time you could cast an instant.) When this creature enters, untap another target creature you control.