Counter target spell. You gain 3 life.

Flying

When Azor, the Lawbringer enters the battlefield, each opponent can't cast instant or sorcery spells during that player's next turn.

Whenever Azor attacks, you may pay {X}{W}{U}{U}. If you do, you gain X life and draw X cards.

Azorius Chancery enters the battlefield tapped.

When Azorius Chancery enters the battlefield, return a land you control to its owner's hand.

{T}: Add {W}{U}.

{T}: Add {W} or {U}.

{W}{U}: Azorius Keyrune becomes a 2/2 white and blue Bird artifact creature with flying until end of turn.

Return target creature card from your graveyard to the battlefield.

Flying

{U}: Cerulean Sphinx's owner shuffles it into their library.

Draw two cards. Then discard a card unless you attacked this turn.

Flying

When Cloud of Faeries enters the battlefield, untap up to two lands.

Cycling {2} ({2}, Discard this card: Draw a card.)

Coastal Tower enters the battlefield tapped.

{T}: Add {W} or {U}.

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

Sacrifice Commander's Sphere: Draw a card.

Coral Atoll enters the battlefield tapped.

When Coral Atoll enters the battlefield, sacrifice it unless you return an untapped Island you control to its owner's hand.

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

Counter target spell.

White creatures get +1/+1.

Flying

Whenever you cast a noncreature spell, Cunning Breezedancer gets +2/+2 until end of turn.

Flying

Sacrifice Daraja Griffin: Destroy target black creature.

{T}, Sacrifice Daring Apprentice: Counter target spell.

Destroy target artifact or enchantment.

Draw two cards.

{2}, {T}: You may put a multicolored creature card from your hand onto the battlefield.

Flying

{3}{W}{W}: Return Eternal Dragon from your graveyard to your hand. Activate only during your upkeep.

Plainscycling {2} ({2}, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)

+2: Untap all creatures you control. Those creatures get +1/+1 until end of turn.

0: Until end of turn, Gideon, Martial Paragon becomes a 5/5 Human Soldier creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn.

-10: Creatures you control get +2/+2 until end of turn. Tap all creatures your opponents control.

Glacial Fortress enters the battlefield tapped unless you control a Plains or an Island.

{T}: Add {W} or {U}.

Creatures you control get +1/+1.

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

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

Spells your opponents cast cost {1} more to cast.

When Great Whale enters the battlefield, untap up to seven lands.

Flying

Landfall -- Whenever a land enters the battlefield under your control, tap target creature an opponent controls. If that land is an Island, that creature doesn't untap during its controller's next untap step.

Flying

{T}: If the top card of target player's graveyard is a creature card, put that card on top of that player's library.

Flying, vigilance

Echo {2}{W}{W} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Enchant creature

Enchanted creature gets +1/+5.

Enchant creature

Prevent all damage that would be dealt to enchanted creature.

Flying, protection from all colors

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Karoo enters the battlefield tapped.

When Karoo enters the battlefield, sacrifice it unless you return an untapped Plains you control to its owner's hand.

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

Artifacts, creatures, and lands your opponents control enter the battlefield tapped.

Creatures you control have first strike.

Flying (This creature can't be blocked except by creatures with flying or reach.)

{T}: Add one mana of any color.

Meandering River enters the battlefield tapped.

{T}: Add {W} or {U}.

Flying

Whenever Medomai the Ageless deals combat damage to a player, take an extra turn after this one.

Medomai the Ageless can't attack during extra turns.

Flying

{W}, {T}: Return Mtenda Griffin to its owner's hand and return target Griffin card from your graveyard to your hand. Activate only during your upkeep.

+1: Look at the top card of your library. If it's a noncreature, nonland card, you may reveal it and put it into your hand.

-2: When you cast your next instant or sorcery spell from your hand this turn, it gains rebound. (Exile the spell as it resolves. At the beginning of your next upkeep, you may cast that card from exile without paying its mana cost.)

-9: You get an emblem with "Your opponents can't cast noncreature spells."

Counter target noncreature spell.

This spell can't be countered.

You have no maximum hand size.

Whenever an opponent casts a noncreature spell, draw a card.

Discard three cards: Exile Nezahal, Primal Tide. Return it to the battlefield tapped under its owner's control at the beginning of the next end step.

When Niambi, Faithful Healer enters the battlefield, you may search your library and/or graveyard for a card named Teferi, Timebender, reveal it, and put it into your hand. If you search your library this way, shuffle.

{T}: Add {W} or {U}.

{4}{W}{U}: Ojutai Monument becomes a 4/4 white and blue Dragon artifact creature with flying until end of turn.

Target player draws four cards.

Counter target creature spell. Draw cards equal to that spell's mana value.

Flying

When Palinchron enters the battlefield, untap up to seven lands.

{2}{U}{U}: Return Palinchron to its owner's hand.

When Parallel Thoughts enters the battlefield, search your library for seven cards, exile them in a face-down pile, and shuffle that pile. Then shuffle your library.

If you would draw a card, you may instead put the top card of the pile you exiled into your hand.

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

Flying

When Peregrine Drake enters the battlefield, untap up to five lands.

Until end of turn, you may tap lands you don't control for mana. Spend this mana only to cast spells.

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

Flying

Whenever you cast a noncreature spell, untap Pristine Skywise. It gains protection from the color of your choice until end of turn.

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.'"

Counter target creature spell.

Destroy target creature with power 4 or greater. It can't be regenerated.

Flying

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

Whenever Resplendent Griffin attacks, if you have the city's blessing, put a +1/+1 counter on it.

You gain 3 life.

Draw a card.

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

{T}: Add {W} or {U}.

Creatures with flying get +1/+1.

Whenever Shape Stealer blocks or becomes blocked by a creature, change Shape Stealer's base power and toughness to that creature's power and toughness until end of turn.

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

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

Flying

Sacrifice Spiketail Drakeling: Counter target spell unless its controller pays {2}.

Flying

Other creatures you control with flying get +0/+1.

{T}: Other creatures you control with flying get +1/+0 until end of turn.

Choose one --

• Counter target spell unless its controller pays {3}.

• Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Cast this spell only during combat.

You may put a nonwhite creature card from your hand onto the battlefield. At the beginning of the next end step, return that creature to your hand. (Return it only if it's on the battlefield.)

Instant, sorcery, and Dragon spells you control can't be countered.

Whenever you cast an instant or sorcery spell from your hand, if Taigam, Ojutai Master attacked this turn, that spell gains rebound. (Exile the spell as it resolves. At the beginning of your next upkeep, you may cast that card from exile without paying its mana cost.)

+1: Tap target permanent. It doesn't untap during its controller's next untap step.

-2: Draw a card for each tapped creature target player controls.

-8: You get an emblem with "You have no maximum hand size" and "Whenever a card is put into your graveyard from anywhere, you may return it to your hand."

+2: Untap up to one target artifact or creature.

-3: You gain 2 life and draw two cards.

-9: Take an extra turn after this one.

Indestructible

As long as your devotion to blue is less than five, Thassa isn't a creature. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)

At the beginning of your upkeep, scry 1.

{1}{U}: Target creature you control can't be blocked this turn.

Flying

Sacrifice Unyaro Griffin: Counter target red instant or sorcery spell.

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

As Wanderwine Hub enters the battlefield, you may reveal a Merfolk card from your hand. If you don't, Wanderwine Hub enters the battlefield tapped.

{T}: Add {W} or {U}.

Prevent all combat damage that would be dealt by target attacking creature this turn.

Flying

Whenever a creature with flying attacks, you may draw a card.