Return all attacking creatures to their owner's hand.

For each attacking creature, its owner puts it on the top or bottom of their library.

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

Magecraft -- Whenever you cast or copy an instant or sorcery spell, draw a card.

Target creature can't be blocked this turn.

Flashback {U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Instant and sorcery spells you cast cost {1} less to cast.

Whenever a spell or ability you control counters a spell, you may draw a card. If you do, discard a card.

Creatures your opponents control get -2/-0 until end of turn.

Beyeen Coast enters the battlefield tapped.

{T}: Add {U}.

{T}: Add {C}.

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

{T}: Add {C}.

{1}: Blinkmoth Nexus becomes a 1/1 Blinkmoth artifact creature with flying until end of turn. It's still a land.

{1}, {T}: Target Blinkmoth creature gets +1/+1 until end of turn.

Draw two cards, then discard two cards.

Castle Vantress enters the battlefield tapped unless you control an Island.

{T}: Add {U}.

{2}{U}{U}, {T}: Scry 2.

{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.

Target creature gains flying until end of turn.

Draw a card.

Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Draw a card.

Each player chooses a nonland permanent they control. Return all nonland permanents not chosen this way to their owners' hands. Then you draw a card for each opponent who has more cards in their hand than you.

Surveil 5. (Look at the top five cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Surge {3}{U}{U} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)

Return all nonland permanents to their owners' hands. If this spell's surge cost was paid, create an 8/8 blue Octopus creature token.

Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Draw a card.

{T}: Add {C}. Spend this mana only to cast an instant or sorcery spell.

At the beginning of your upkeep, if there are three or more instant and/or sorcery cards in your graveyard, transform Curious Homunculus.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Instant and sorcery spells you cast cost {1} less to cast.

Target player draws two cards.

Flashback--{1}{U}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{T}, Mill a card: Add {C}. (To mill a card, put the top card of your library into your graveyard.)

Desert of the Mindful enters the battlefield tapped.

{T}: Add {U}.

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

Target creature gets +1/+0 until end of turn and can't be blocked this turn.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Target player mills three cards.

Flashback {1}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

Faerie Conclave enters the battlefield tapped.

{T}: Add {U}.

{1}{U}: Faerie Conclave becomes a 2/1 blue Faerie creature with flying until end of turn. It's still a land.

Each player discards any number of cards, then draws that many cards.

Draw a card.

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.)

I -- You may cast an instant or sorcery spell with mana value 1 or 2 from your hand without paying its mana cost.

II -- Target player mills four cards.

III -- Exile target instant or sorcery card from your graveyard. Copy it. You may cast the copy.

Draw two cards, then discard two cards. Untap up to three lands.

Whenever you cast an instant or sorcery spell from your hand, you may cast up to one target card of the other type from your graveyard. If a spell cast from your graveyard this way would be put into your graveyard, exile it instead.

Choose a Background (You can have a Background as a second commander.)

Up to two target creatures can't be blocked this turn.

Whenever Ghostly Pilferer becomes untapped, you may pay {2}. If you do, draw a card.

Whenever an opponent casts a spell from anywhere other than their hand, draw a card.

Discard a card: Ghostly Pilferer can't be blocked this turn.

({U/P} can be paid with either {U} or 2 life.)

Look at target player's hand.

Draw a card.

You may have Glasspool Mimic enter the battlefield as a copy of a creature you control, except it's a Shapeshifter Rogue in addition to its other types.

Glasspool Shore enters the battlefield tapped.

{T}: Add {U}.

Whenever you cast a noncreature spell, put an oil counter on Ichor Synthesizer.

As long as Ichor Synthesizer has four or more oil counters on it, it gets +2/+0 and can't be blocked.

Draw three cards. Discard three cards at the beginning of the next end step.

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

Invisible Stalker can't be blocked.

{T}: Draw a card, then discard a card. If there are five or more cards in your graveyard, exile Jace, Vryn's Prodigy, then return him to the battlefield transformed under his owner's control.

+1: Up to one target creature gets -2/-0 until your next turn.

-3: You may cast target instant or sorcery card from your graveyard this turn. If that spell would be put into your graveyard, exile it instead.

-9: You get an emblem with "Whenever you cast a spell, target opponent mills five cards."

Counter target spell unless its controller pays {1}.

Jwari Ruins enters the battlefield tapped.

{T}: Add {U}.

Target creature gains flying until end of turn.

Draw a card.

Lonely Sandbar enters the battlefield tapped.

{T}: Add {U}.

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

Shadow (This creature can block or be blocked by only creatures with shadow.)

Whenever Looter il-Kor deals damage to an opponent, draw a card, then discard a card.

Mill two cards.

Draw a card.

Mercurial Spelldancer can't be blocked.

Whenever you cast a noncreature spell, put an oil counter on Mercurial Spelldancer.

Whenever Mercurial Spelldancer deals combat damage to a player, you may remove two oil counters from it. If you do, when you cast your next instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.

Surveil 2, then choose an instant or sorcery card in your graveyard. You may cast it this turn. If that spell would be put into your graveyard, exile it instead. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.

Myriad Landscape enters the battlefield tapped.

{T}: Add {C}.

{2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

({T}: Add {U}.)

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

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

Draw a card.

Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Draw X cards, then discard X cards. Create a 1/1 white Spirit creature token with flying for each card type among cards discarded this way.

This spell costs {8} less to cast if you have eight or more instant and/or sorcery cards in your graveyard.

Ward {8}

Magecraft -- Whenever you cast or copy an instant or sorcery spell, target creature has base power and toughness 8/8 until end of turn.

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.)

X target creatures can't be blocked this turn. Until end of turn, those creatures gain "Whenever this creature deals combat damage to a player, draw a card."

Flying

{T}: Add one mana of any color.

Surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Flashback {1}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Destroy target creature. It can't be regenerated. Its controller creates a 3/3 green Ape creature token.

Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.

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.)

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.)

Trample, ward {2}

At the beginning of each combat, if Reservoir Kraken is untapped, any opponent may tap an untapped creature they control. If they do, tap Reservoir Kraken and create a 1/1 blue Fish creature token with "This creature can't be blocked."

Counter target spell. Untap up to four lands.

{T}: Add {C}.

{1}{U}, {T}: Return target Wizard you control to its owner's hand.

Draw cards equal to the highest mana value among permanents you control.

At the beginning of your upkeep, surveil 1. Then if you have seven or more cards in your graveyard, you may transform Search for Azcanta. (Look at the top card of your library. You may put that card into your graveyard.)

(Transforms from Search for Azcanta.)

{T}: Add {U}.

{2}{U}, {T}: Look at the top four cards of your library. You may reveal a noncreature, nonland card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Target creature gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)

Draw a card.

Look at the top six cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Silundi Isle enters the battlefield tapped.

{T}: Add {U}.

Devoid (This card has no color.)

Target creature can't be blocked this turn.

Draw a card.

({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 {C}{C}.

Reach, trample, protection from multicolored

Stonecoil Serpent enters the battlefield with X +1/+1 counters on it.

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

Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)

Teferi's Isle enters the battlefield tapped.

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

Shadow (This creature can block or be blocked by only creatures with shadow.)

When Thalakos Seer leaves the battlefield, draw a card.

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.

You have no maximum hand size.

At the beginning of your upkeep, put a knowledge counter on The Magic Mirror, then draw a card for each knowledge counter on The Magic Mirror.

The Surgical Bay enters the battlefield tapped.

{T}: Add {U}.

{1}{U}, {T}, Sacrifice The Surgical Bay: Draw a card.

Draw three cards. Then discard two cards unless you discard a basic land card.

Draw three cards. Then discard two cards unless you discard an artifact card.

Target player mills two cards.

Draw a card.

Discard all the cards in your hand, then draw that many cards.

Counter target noncreature spell. Untap up to three lands.

Return all creatures to their owners' hands except for Krakens, Leviathans, Octopuses, and Serpents.

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

Flying

Whenever you cast an instant, sorcery, or Wizard spell, you may draw a card. If you do, discard a card.

Choose one --

• Fight the Current -- Return target nonland permanent to its owner's hand.

• Find a Crossing -- Target creature gets +1/+0 until end of turn and can't be blocked this turn.

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}.