When Academy Rector dies, you may exile it. If you do, search your library for an enchantment card, put that card onto the battlefield, then shuffle.

Whenever a player casts a creature spell, that player sacrifices a permanent unless they pay {1}.

{T}: Draw three cards.

{2}{U}{U}: Return Arcanis the Omnipotent to its owner's hand.

Flying

Whenever Archon of the Triumvirate attacks, detain up to two target nonland permanents your opponents control. (Until your next turn, those permanents can't attack or block and their activated abilities can't be activated.)

Destroy all lands.

Artifact and enchantment spells your opponents cast cost {2} more to cast.

Sacrifice Aura of Silence: Destroy target artifact or enchantment.

Choose two --

• Destroy all artifacts.

• Destroy all enchantments.

• Destroy all creatures with mana value 3 or less.

• Destroy all creatures with mana value 4 or greater.

Flying, vigilance, indestructible

Other permanents you control have indestructible.

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}.

Choose one --

• Creatures you control gain lifelink until end of turn.

• Draw a card.

• Put target attacking or blocking creature on top of its owner's library.

{2}{W}: Tap target creature.

{2}{U}: Counter target activated ability. (Mana abilities can't be targeted.)

{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.

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

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Artifacts and creatures your opponents control enter the battlefield tapped.

Boreal Shelf enters the battlefield tapped.

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

Boseiju, Who Shelters All enters the battlefield tapped.

{T}, Pay 2 life: Add {C}. If that mana is spent on an instant or sorcery spell, that spell can't be countered.

As Cavern of Souls enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Celestial Colonnade enters the battlefield tapped.

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

{3}{W}{U}: Until end of turn, Celestial Colonnade becomes a 4/4 white and blue Elemental creature with flying and vigilance. It's still a land.

As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery.

Spells you cast of the chosen type cost {1} less to cast.

{T}: Add one mana of any color.

{T}: Put a charge counter on Coalition Relic.

At the beginning of your precombat main phase, remove all charge counters from Coalition Relic. Add one mana of any color for each charge counter removed this way.

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

As Council of the Absolute enters the battlefield, choose a noncreature, nonland card name.

Your opponents can't cast spells with the chosen name.

Spells with the chosen name you cast cost {2} less to cast.

Counter target spell.

Return target nonland permanent you don't control to its owner's hand.

Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Indestructible

{T}: Add one mana of any color.

Indestructible

Equipped creature has indestructible.

Equip {2}

Counter target spell. If an artifact or creature spell is countered this way, put that card onto the battlefield under your control instead of into its owner's graveyard.

Rather than pay the mana cost for a spell, its controller may discard a card that shares a color with that spell.

{T}: Add {W}.

{W}, {T}: Prevent the next 2 damage that would be dealt to target legendary creature this turn.

{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.

+1: Create three 1/1 white Soldier creature tokens.

-3: Destroy all creatures with power 4 or greater.

-7: You get an emblem with "Creatures you control get +2/+2 and have flying."

Search your library for an artifact or enchantment card, reveal it, then shuffle and put that card on top.

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.

{T}: Add {W}.

When Flagstones of Trokair is put into a graveyard from the battlefield, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

{T}: Add three mana of any one color.

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

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

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.

Put all creatures on the bottom of their owners' libraries.

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

As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Whenever an opponent casts a creature spell that doesn't share a color with a creature you control, counter that spell unless that player pays {X}, where X is its mana value.

({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}.)

Imprint -- When Isochron Scepter enters the battlefield, you may exile an instant card with mana value 2 or less from your hand.

{2}, {T}: You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

+2: Look at the top card of target player's library. You may put that card on the bottom of that player's library.

0: Draw three cards, then put two cards from your hand on top of your library in any order.

-1: Return target creature to its owner's hand.

-12: Exile all cards from target player's library, then that player shuffles their hand into their library.

Whenever a spell or ability an opponent controls destroys a noncreature permanent you control, you may destroy target permanent that opponent controls.

{T}: Add {C}.

{1}{W}, {T}: Prevent all combat damage that would be dealt by target attacking creature this turn.

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

Equip {0}

All creatures have "At the beginning of your upkeep, sacrifice this creature unless you pay {1}."

Whenever a land an opponent controls is tapped for mana, tap all lands that player controls that could produce any type of mana that land could produce.

{T}: Add {U}.

{U}, {T}: Untap target legendary permanent.

{T}: Add {C}.

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

Search your library for an instant or sorcery card, reveal it, then shuffle and put that card on top.

{W}{U}: Target creature gains flying until end of turn.

{3}{W}{U}: Detain target nonland permanent an opponent controls. (Until your next turn, that permanent can't attack or block and its activated abilities can't be activated.)

{T}: Add {U}.

{1}: Return Oboro, Palace in the Clouds to its owner's hand.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

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

({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}.)

({T}: Add {W}.)

({T}: Add {W}.)

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

You have no maximum hand size.

{T}: Add {C}.

Exile target artifact or enchantment. If you cast this spell during your main phase, you may exile up to one other target artifact or enchantment.

Flying

At the beginning of your upkeep, you may return target creature card from your graveyard to the battlefield.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

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

Your opponents can't cast spells this turn.

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

{T}: Choose a player. That player adds one mana of any color they choose.

You gain X life and draw X cards.

Spells you cast cost up to {1} less to cast.

Flying

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

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

All lands are Islands in addition to their other types.

Creatures without flying or islandwalk can't attack.

Vigilance

Whenever Sun Titan enters the battlefield or attacks, you may return target permanent card with mana value 3 or less from your graveyard to the battlefield.

Return all lands to their owners' hands.

This spell can't be countered.

Destroy all creatures.

Exile target creature. Its controller gains life equal to its power.

{T}: Add {C}{C}. Activate only if you control five or more lands.

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

Tolaria West enters the battlefield tapped.

{T}: Add {U}.

Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with mana value 0, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.

{1}, {T}: Untap target artifact.

Return all permanents to their owners' hands. Each player chooses up to seven cards in their hand, then shuffles the rest into their library. Each player loses all unspent mana.

Destroy all creatures. They can't be regenerated.