When Aether Channeler enters the battlefield, choose one — • Create a 1/1 white Bird creature token with flying. • Return another target nonland permanent to its owner's hand. • Draw a card.

{T}: Draw three cards. {2}{U}{U}: Return Arcanis the Omnipotent to its owner's hand.

When Archaeomancer enters the battlefield, return target instant or sorcery card from your graveyard to your hand.

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

When Cyclone Summoner enters the battlefield, if you cast it from your hand, return all permanents to their owners' hands except for Giants, Wizards, and lands.

Flying As an additional cost to cast blue permanent spells, you may pay 2 life. Those spells cost {U} less to cast if you paid life this way. This effect reduces only the amount of blue mana you pay. Whenever you cast a blue permanent spell, draw a card.

Flying When Faerie Seer enters the battlefield, scry 2.

At the beginning of each opponent's upkeep, that player chooses draw step, main phase, or combat phase. The player skips each instance of the chosen step or phase this turn.

When Gadwick, the Wizened enters the battlefield, draw X cards. Whenever you cast a blue spell, tap target nonland permanent an opponent controls.

Tap an untapped Wizard you control: Return target nonland permanent you don't control to its owner's hand.

You have no maximum hand size.

{T}: Look at the top X cards of your library, where X is the number of Wizards on the battlefield, then put them back in any order.

When Meldweb Curator enters the battlefield, put up to one target instant or sorcery card from your graveyard on top of your library.

Whenever you draw your second card each turn, create a 1/1 blue Illusion creature token with "This creature gets +1/+0 for each other Illusion you control." Whenever an Illusion you control dies, you may put a permanent card with mana value less than or equal to that creature's power from your hand onto the battlefield.

If a Wizard entering the battlefield under your control causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Flash When Naru Meha, Master Wizard enters the battlefield, copy target instant or sorcery spell you control. You may choose new targets for the copy. Other Wizards you control get +1/+1.

When Oracle of Tragedy enters the battlefield or dies, choose one — • Draw a card, then discard a card. • Shuffle up to four target cards with mana value 3 or greater from your graveyard into your library.

When Overwhelmed Apprentice enters the battlefield, each opponent mills two cards. Then you 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.)

Tap an untapped Wizard you control: Counter target spell unless its controller pays {1}.

Flash When Portal Mage enters the battlefield during the declare attackers step, you may reselect which player or permanent target attacking creature is attacking. (It can't attack its controller or its controller's planeswalkers.)

{2}{U}{U}, {T}: Draw a card for each Wizard you control.

When Sage of Epityr enters the battlefield, look at the top four cards of your library, then put them back in any order.

Each other Wizard creature you control enters the battlefield with an additional +1/+1 counter on it. {2}, Remove a +1/+1 counter from a creature you control: Draw a card.

When Sea Gate Oracle enters the battlefield, look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Flying {U}, Sacrifice Siren Stormtamer: Counter target spell or ability that targets you or a creature you control.

Flying When Sower of Temptation enters the battlefield, gain control of target creature for as long as Sower of Temptation remains on the battlefield.

Flash Creature cards you own that aren't on the battlefield have flash. Each opponent can cast spells only any time they could cast a sorcery.

When Tribute Mage enters the battlefield, you may search your library for an artifact card with mana value 2, reveal that card, put it into your hand, then shuffle.

When Trinket Mage enters the battlefield, you may search your library for an artifact card with mana value 1 or less, reveal that card, put it into your hand, then shuffle.

Other blue creatures you control have "Whenever this creature becomes tapped, draw a card, then discard a card." Other artifact creatures you control get +1/+1. {U/P}: Until end of turn, target creature you control becomes a blue artifact in addition to its other colors and types. Activate only as a sorcery. ({U/P} can be paid with either {U} or 2 life.)

Flash (You may cast this spell any time you could cast an instant.) When Vedalken Aethermage enters the battlefield, return target Sliver to its owner's hand. Wizardcycling {3} ({3}, Discard this card: Search your library for a Wizard card, reveal it, put it into your hand, then shuffle.)

Flash When Venser, Shaper Savant enters the battlefield, return target spell or permanent to its owner's hand.

As Reflections of Littjara enters the battlefield, 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.)

Return all attacking creatures to their owner's hand.

Target player draws X cards. Shuffle Blue Sun's Zenith into its owner's library.

Counter target spell.

Untap all nonland permanents you control.

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

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

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

Counter target noncreature spell.

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.)

Exile target artifact or creature. Its controller creates a 4/4 blue and red Elemental creature token.

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

You have no maximum hand size. {T}: Add one mana of any color.

Blue creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step.

{T}: Add {C}. {1}, {T}, Sacrifice Mind Stone: Draw a card.

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

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

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.

Exile X target creatures. For each creature exiled this way, its controller creates a 2/2 green Boar creature token.

If you would draw a card while your library has no cards in it, you win the game instead. +1: Target player mills two cards. Draw a card. −8: Draw seven cards. Then if your library has no cards in it, you win the game.

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

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

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.

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.)