Counter target artifact or enchantment spell.

Enchant creature

Enchanted creature can't be blocked.

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

Flying

Whenever you cast a historic spell, scry 1. (Artifacts, legendaries, and Sagas are historic. To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.)

Flying

When Augury Owl enters the battlefield, scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Flying

When Bazaar Trademage enters the battlefield, draw two cards, then discard three cards.

For each creature target player controls, create a token that's a copy of that creature.

Flying

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Flying

When Cloudkin Seer enters the battlefield, draw a card.

Equipped creature gets +3/+3 and has protection from each color that's not in your commander's color identity.

Equip commander {3}

Equip {5}

Enchant permanent

You control enchanted permanent.

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}.

Defender

{T}: Creatures you control gain haste until end of turn.

When Cryptic Annelid enters the battlefield, scry 1, then scry 2, then scry 3. (To scry X, look at the top X cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Whenever a creature you control becomes blocked, you may return it to its owner's hand.

Flying

When Diluvian Primordial enters the battlefield, for each opponent, you may cast up to one target instant or sorcery card from that player's graveyard without paying its mana cost. If a spell cast this way would be put into a graveyard, exile it instead.

Counter target instant spell.

Flash

Flying

When Dream Eater enters the battlefield, surveil 4. When you do, you may return target nonland permanent an opponent controls to its owner's hand. (To surveil 4, look at the top four cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

{2}{U}, {T}, Discard a card, Sacrifice a land: Search your library for up to two basic land cards, put them onto the battlefield, then shuffle.

Flying

If you would scry a number of cards, draw that many cards instead.

Partner (You can have two commanders if both have partner.)

Return to their owners' hands all creatures with toughness less than or equal to the number of Islands you control.

Flying

Spells your opponents cast that target one or more commanders you control cost {3} more to cast.

Partner (You can have two commanders if both have partner.)

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Flying

When Experimental Aviator enters the battlefield, create two 1/1 colorless Thopter artifact creature tokens with flying.

Flying

When Faerie Seer enters the battlefield, scry 2.

Flash

Flying

Whenever you draw your second card each turn, put a +1/+1 counter on Faerie Vandal.

Return all nonland permanents to their owners' hands. If you return four or more nontoken permanents you control this way, you may put a permanent card from your hand onto the battlefield.

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.

Flying

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Counter target spell with mana value 3 or less. (Then exile this card. You may cast the creature later from exile.)

Flying

Whenever Impaler Shrike deals combat damage to a player, you may sacrifice it. If you do, draw three cards.

({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}.)

({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}.)

Flying

Jace's Phantasm gets +4/+4 as long as an opponent has ten or more cards in their graveyard.

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.

Flying

Historic spells you cast cost {1} less to cast. (Artifacts, legendaries, and Sagas are historic.)

Flying

When Keiga, the Tide Star dies, gain control of target creature.

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

Enchant permanent

You control enchanted permanent.

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

Flying

Whenever Merfolk Windrobber deals combat damage to a player, that player mills a card. (They put the top card of their library into their graveyard.)

Sacrifice Merfolk Windrobber: Draw a card. Activate only if an opponent has eight or more cards in their graveyard.

{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.

{X}, {T}: Target creature with power X or less can't be blocked this turn.

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

Equipped creature gets +0/+2 and has hexproof and "Whenever a creature with deathtouch blocks or becomes blocked by this creature, destroy that creature."

Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

({T}: Add {U}.)

Mystic Sanctuary enters the battlefield tapped unless you control three or more other Islands.

When Mystic Sanctuary enters the battlefield untapped, you may put target instant or sorcery card from your graveyard on top of your library.

Whenever you draw a card, you may pay {1}. If you do, put a +1/+1 counter on Nadir Kraken and create a 1/1 blue Tentacle creature token.

Flying

Whenever you draw a card, put a +1/+1 counter on Oneirophage.

Moonfolk offering (You may cast this card any time you could cast an instant by sacrificing a Moonfolk and paying the difference in mana costs between this and the sacrificed Moonfolk. Mana cost includes color.)

Flying

{1}: Put up to two land cards from your hand onto the battlefield tapped.

Draw three cards.

Addendum -- If you cast this spell during your main phase, instead scry 3, then draw three cards.

Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Enchant creature

Enchanted creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)

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.)

Return all artifacts to their owners' hands.

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

Return target instant or sorcery card from your graveyard to your hand.

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Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

You may have Sakashima the Impostor enter the battlefield as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has "{2}{U}{U}: Return this creature to its owner's hand at the beginning of the next end step."

Choose one. If you control a commander as you cast this spell, you may choose both.

• Target opponent chooses a creature they control. You gain control of it.

• Choose a creature you control. Each other creature you control becomes a copy of that creature until end of turn.

Flying

Whenever Siani, Eye of the Storm attacks, scry X, where X is the number of attacking creatures with flying.

Partner (You can have two commanders if both have partner.)

Flying

When Silver Raven enters the battlefield, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Flying

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

Flash (You may cast this spell any time you could cast an instant.)

Flying

{3}{U}: Draw a card.

Flying

{2}{U}: Draw a card, then put a +1/+1 counter on Sphinx of Magosi.

Return target creature with mana value X to its owner's hand. You create X 1/1 blue Faerie creature tokens with flying.

Flash

You may have Stunt Double enter the battlefield as a copy of any creature on the battlefield.

Exchange control of two target creatures.

Counter target activated ability, triggered ability, or legendary spell.

Whenever you cast an instant or sorcery spell, create a 2/2 blue Drake creature token with flying.

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.)

Flying

When Tome Raider enters the battlefield, draw a card.

Whenever a creature an opponent controls becomes tapped, if it isn't being declared as an attacker, you may draw a card.

{4}{U}: Tap target creature without flying.

Draw a card. If a graveyard has twenty or more cards in it, draw three cards instead.

Flying

Creature spells with flying you cast cost {1} less to cast.

Flying

Whenever Windrider Patrol deals combat damage to a player, 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.)

This spell costs {1} less to cast if you control a creature with flying.

Draw two cards.

Flying

{3}{U}: Scry 1.

(Gain the next level as a sorcery to add its ability.)

You have no maximum hand size.

{2}{U}: Level 2

When this Class becomes level 2, draw two cards.

{4}{U}: Level 3

Whenever you draw a card, put a +1/+1 counter on target creature you control.

When Zhalfirin Void enters the battlefield, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

{T}: Add {C}.