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

When Coveted Jewel enters the battlefield, draw three cards. {T}: Add three mana of any one color. Whenever one or more creatures an opponent controls attack you and aren't blocked, that player draws three cards and gains control of Coveted Jewel. Untap it.

Whenever a player casts a blue spell, you may pay {1}. If you do, you gain 1 life.

Players have no maximum hand size. {X}{X}, {T}: Each player draws X cards. {2}{U}, {T}: Each opponent mills cards equal to the number of cards in their hand.

At the beginning of each player's upkeep, that player reveals the top card of their library. If it's an artifact, creature, enchantment, or land card, the player may put it onto the battlefield.

{T}: Add {C}{C}. {2}, {T}, Sacrifice Hedron Archive: Draw two cards.

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

At the beginning of your upkeep, you may put a petal counter on Lotus Blossom. {T}, Sacrifice Lotus Blossom: Add X mana of any one color, where X is the number of petal counters on Lotus Blossom.

{T}: Add {U}. {2}{U}: Put an hour counter on Midnight Clock. At the beginning of each upkeep, put an hour counter on Midnight Clock. When the twelfth hour counter is put on Midnight Clock, shuffle your hand and graveyard into your library, then draw seven cards. Exile Midnight Clock.

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

{2}, {T}, Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Body of Knowledge's power and toughness are each equal to the number of cards in your hand. You have no maximum hand size. Whenever Body of Knowledge is dealt damage, draw that many cards.

At the beginning of each player's upkeep, that player may put an artifact, creature, or land card from their hand onto the battlefield.

Callaphe's power is equal to your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.) Creatures and enchantments you control have "Spells your opponents cast that target this permanent cost {1} more to cast."

When Clockwork Fox leaves the battlefield, you draw two cards and each opponent draws a card.

{6}{U}, Sacrifice Eidolon of Philosophy: Draw three cards.

You have no maximum hand size.

Whenever Howling Golem attacks or blocks, each player draws a card.

{T}: Add {U}. Spend this mana only to foretell a card from your hand or cast an instant or sorcery spell.

If you would draw a card while your library has no cards in it, you win the game instead.

Flying, vigilance When Malcator's Watcher dies, draw a card.

Flying {1}, Return a land you control to its owner's hand: Create a 1/1 blue Illusion creature token with flying.

Dominate Monster — When Mind Flayer enters the battlefield, gain control of target creature for as long as you control Mind Flayer.

Myojin of Cryptic Dreams enters the battlefield with an indestructible counter on it if you cast it from your hand. Remove an indestructible counter from Myojin of Cryptic Dreams: Copy target permanent spell you control three times. (The copies become tokens.)

As long as it's not your turn, spells you cast cost {1} less to cast.

Bigby's Hand — {T}: Untap two other target permanents. Activate only as a sorcery and only once each turn.

When Octoprophet enters the battlefield, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

{T}: Add one mana of any color. Spend this mana only to cast an instant or sorcery spell. {5}{U}, {T}: Target player mills three cards. (They put the top three cards of their library into their graveyard.)

Psychosis Crawler's power and toughness are each equal to the number of cards in your hand. Whenever you draw a card, each opponent loses 1 life.

Syr Elenora, the Discerning's power is equal to the number of cards in your hand. When Syr Elenora enters the battlefield, draw a card. Spells your opponents cast that target Syr Elenora cost {2} more to cast.

When Thassa's Oracle enters the battlefield, 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.)

{7}: Draw two cards.

You have no maximum hand size. At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game. {3}{U}: Draw a card.

{T}: You may put a land card from your hand onto the battlefield.

Enchant permanent You control enchanted permanent.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I, II — Draw two cards, then discard a card. III — Shuffle any number of target cards from your graveyard into your library. Add {U}{U}.

If you would draw a card, draw two cards instead.

Counter target artifact or enchantment spell.

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.

Return target permanent to its owner's hand.

Counter target spell.

Counter target spell. Draw a card.

This spell costs {U}{U}{U} less to cast if an opponent has drawn four or more cards this turn. Draw X cards.

Return all noncreature, nonland permanents to their owners' hands.

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

Tap target creature. Scry 1. Draw a card.

As an additional cost to cast this spell, you may exile any number of blue cards from your hand. This spell costs {2} less to cast for each card exiled this way. Up to X target creatures phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)

Counter target noncreature spell.

Scry 1. Draw a card.

Exile target artifact or creature, then return it to the battlefield under its owner's control with a +1/+1 counter on it.

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

Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)

Counter target spell unless its controller pays {X}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Copy target instant or sorcery spell. You may choose new targets for the copy.

({T}: Add {U}.)

{T}: Add {C}. {2}, {T}: Each player draws a card.

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

Remote Isle enters the battlefield tapped. {T}: Add {U}. Cycling {2} ({2}, Discard this card: Draw a card.)

+2: Each player draws a card. −1: Target player draws a card. −10: Target player mills twenty cards.

Assist (Another player can pay up to {5} of this spell's cost.) Each player shuffles their hand and graveyard into their library, then draws seven cards. Exile Game Plan.

Creatures target player controls don't untap during that player's next untap step.

Exile target artifact or creature. Its controller creates a 1/1 blue Bird creature token with flying. Foretell {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.)

Exchange control of two target creatures.

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

Each player may play an additional land on each of their turns. At the beginning of each player's upkeep, if that player has no cards in hand, that player draws three cards.

At the beginning of your upkeep, you gain X life, where X is the number of cards in your hand minus 4.

Sky Diamond enters the battlefield tapped. {T}: Add {U}.

You have no maximum hand size.