Exile target creature or planeswalker. Its controller creates a 4/4 white Angel creature token with flying.

Return Attunement to its owner's hand: Draw three cards, then discard four cards.

{T}: Draw two cards, then discard three cards.

Attacking creatures you control have double strike.

Cumulative upkeep--Add {R}. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Target player draws X cards.

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

Partner with Shabraz, the Skyshark (When this creature enters the battlefield, target player may put Shabraz into their hand from their library, then shuffle.)

Whenever you discard a card, put a +1/+1 counter on Brallin, Skyshark Rider and it deals 1 damage to each opponent.

{R}: Target Shark gains trample until end of turn.

Draw two cards, then discard two cards.

{T}: Add {U}. Cephalid Coliseum deals 1 damage to you.

Threshold -- {U}, {T}, Sacrifice Cephalid Coliseum: Target player draws three cards, then discards three cards. Activate only if seven or more cards are in your graveyard.

Enchant creature

Whenever enchanted creature deals damage to an opponent, you may draw a card.

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

When you control no Islands, sacrifice Dandân.

When Deepglow Skate enters the battlefield, double the number of each kind of counter on any number of target permanents.

Tap any number of untapped creatures you control. Create a 4/4 white Angel creature token with flying for each creature tapped this way.

Counter target instant or sorcery spell unless its controller pays {1}.

Draw a card.

When Electric Eel enters the battlefield, it deals 1 damage to you.

{R}{R}: Electric Eel gets +2/+0 until end of turn and deals 1 damage to you.

Whenever Fleet Swallower attacks, target player mills half their library, rounded up.

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.

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

You may cast Harbinger of the Tides 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 Harbinger of the Tides enters the battlefield, you may return target tapped creature an opponent controls to its owner's hand.

Whenever a player plays a land, that player draws a card.

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.

Enchant creature

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

Flying

When Jace's Mindseeker enters the battlefield, target opponent mills five cards. You may cast an instant or sorcery spell from among them without paying its mana cost.

+2: Look at the top card of target player's library. You may put that card on the bottom of that player's library.

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

-1: Return target creature to its owner's hand.

-12: Exile all cards from target player's library, then that player shuffles their hand into their library.

Whenever you cast your second spell each turn, draw a card.

At the beginning of your upkeep, if an opponent controls more lands than you, you may search your library for up to three basic land cards, reveal them, put them into your hand, then shuffle.

At the beginning of each opponent's end step, if you didn't lose life this turn, you may put a quest counter on Luminarch Ascension. (Damage causes loss of life.)

{1}{W}: Create a 4/4 white Angel creature token with flying. Activate only if Luminarch Ascension has four or more quest counters on it.

Manta Ray can't attack unless defending player controls an Island.

Manta Ray can't be blocked except by blue creatures.

When you control no Islands, sacrifice Manta Ray.

Draw four cards. You skip your next turn.

{T}: Draw a card, then discard a card.

Equipped creature has first strike.

Whenever equipped creature attacks, create a 4/4 white Angel creature token with flying.

Equip {4}

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}.

Flying, first strike, vigilance

Whenever Parhelion II attacks, create two 4/4 white Angel creature tokens with flying and vigilance that are attacking.

Crew 4 (Tap any number of creatures you control with total power 4 or more: This Vehicle becomes an artifact creature until end of turn.)

Mutate {3}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Flash

Whenever this creature mutates, you may return target creature an opponent controls to its owner's hand.

Each player draws X cards.

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

Rhystic Lightning deals 4 damage to any target unless that permanent's controller or that player pays {2}. If they do, Rhystic Lightning deals 2 damage to the permanent or player.

Draw three cards. Then if any player pays {2}, discard three cards.

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

+2: Creatures you control with flying get +1/+1 until end of turn.

-3: Create a 4/4 white Angel creature token with flying and vigilance.

-6: You get an emblem with "If you control a creature, damage that would reduce your life total to less than 1 reduces it to 1 instead."

Partner with Brallin, Skyshark Rider

Flying

Whenever you draw a card, put a +1/+1 counter on Shabraz, the Skyshark and you gain 1 life.

{W/U}: Target Human gains flying until end of turn.

Whenever you cast a noncreature spell, create an X/X blue Shark creature token with flying, where X is that spell's mana value.

Cycling {X}{1}{U} ({X}{1}{U}, Discard this card: Draw a card.)

When you cycle Shark Typhoon, create an X/X blue Shark creature token with flying.

Whenever you cast an enchantment spell, create a 4/4 white Angel creature token with flying.

Flying

When Sky-Eel School enters the battlefield, draw a card, then discard a card.

Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Whenever Spined Megalodon attacks, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

When a player casts a spell, sacrifice Standstill. If you do, each of that player's opponents draws three cards.

Players skip their untap steps.

At the beginning of your upkeep, sacrifice Stasis unless you pay {U}.

Surge Mare can't be blocked by green creatures.

Whenever Surge Mare deals damage to an opponent, you may draw a card. If you do, discard a card.

{1}{U}: Surge Mare gets +2/-2 until end of turn.

Exile Time Spiral. Each player shuffles their hand and graveyard into their library, then draws seven cards. You untap up to six lands.

Each player shuffles their hand and graveyard into their library, then draws seven cards. (Then put Timetwister into its owner's graveyard.)

Flash

When Voracious Greatshark enters the battlefield, counter target artifact or creature spell.

{U}, {T}, Discard a card: Return target creature to its owner's hand.

Each player discards their hand, then draws seven cards.

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.