You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Whenever an enchantment enters the battlefield under your control, create a 2/2 white Cat creature token. If that enchantment is an Aura, you may attach it to the token.

{T}: Add {C}.

{G}{U}, {T}: You may cast spells this turn as though they had flash.

Creatures you control have flying.

Creatures your opponents control lose flying and can't have or gain flying.

Shroud (This creature can't be the target of spells or abilities.)

Whenever you cast an enchantment spell, draw a card.

{T}: Add {C}.

Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

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

Sacrifice Aura of Silence: Destroy target artifact or enchantment.

Whenever a creature deals damage to you, put a gold counter on it.

Each creature with a gold counter on it is a Wall in addition to its other creature types and has defender. (Those creatures can't attack.)

When Aurification leaves the battlefield, remove all gold counters from all creatures.

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.

Enchant creature

Enchanted creature gets +2/+2 and has "Whenever this creature attacks, untap all lands you control."

Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

Bountiful Promenade enters the battlefield tapped unless you have two or more opponents.

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

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

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

Whenever an opponent plays a land, you may put a land card from your hand onto the battlefield.

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

Canopy Vista enters the battlefield tapped unless you control two or more basic lands.

Flash

When Cast Out enters the battlefield, exile target nonland permanent an opponent controls until Cast Out leaves the battlefield.

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

Domain -- Creatures can't attack you unless their controller pays {X} for each creature they control that's attacking you, where X is the number of basic land types among lands you control.

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

Counter target spell.

Choose a permanent type. Return all cards of the chosen type from your graveyard to your hand.

Flashback {5}{G}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

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.")

{T}: Add {C}.

{1}, {T}: Until end of turn, your opponents and creatures your opponents control with hexproof can be the targets of spells and abilities you control as though they didn't have hexproof.

When Detention Sphere enters the battlefield, you may exile target nonland permanent not named Detention Sphere and all other permanents with the same name as that permanent.

When Detention Sphere leaves the battlefield, return the exiled cards to the battlefield under their owner's control.

Constellation -- Whenever Eidolon of Blossoms or another enchantment enters the battlefield under your control, draw a card.

Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

Whenever you cast an enchantment spell, draw a card.

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

You may have Estrid's Invocation enter the battlefield as a copy of an enchantment you control, except it has "At the beginning of your upkeep, you may exile this enchantment. If you do, return it to the battlefield under its owner's control."

+2: Untap each enchanted permanent you control.

-1: Create a white Aura enchantment token named Mask attached to another target permanent. The token has enchant permanent and totem armor.

-7: Mill seven cards. Return all non-Aura enchantment cards from your graveyard to the battlefield, then do the same for Aura cards.

Estrid, the Masked can be your commander.

When Eternal Witness enters the battlefield, you may return target card from your graveyard to your hand.

Enchant creature

Enchanted creature gets +1/+1 for each enchantment you control and has first strike.

You may play an additional land on each of your turns.

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

Enchant land

Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

Whenever a creature you control attacks alone, if it's the first combat phase of the turn, untap that creature. After this phase, there is an additional combat phase.

{T}: Add {C}.

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

{T}, Pay 1 life, Sacrifice Flooded Strand: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

{T}: Add {C}.

{T}, Sacrifice Ghost Quarter: Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle.

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

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

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

When Grasp of Fate enters the battlefield, for each opponent, exile up to one target nonland permanent that player controls until Grasp of Fate leaves the battlefield. (Those permanents return under their owners' control.)

({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.

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

Whenever you cast an enchantment spell, you gain 1 life.

Permanents you control gain hexproof and indestructible until end of turn.

Hinterland Harbor enters the battlefield tapped unless you control a Forest or an Island.

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

Enchant creature, land, or planeswalker

Enchanted permanent is a colorless land with "{T}: Add {C}" and loses all other card types and abilities.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

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

Krosan Verge enters the battlefield tapped.

{T}: Add {C}.

{2}, {T}, Sacrifice Krosan Verge: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.

If Leyline of Anticipation is in your opening hand, you may begin the game with it on the battlefield.

You may cast spells as though they had flash.

Whenever you cast an enchantment spell, you may draw a card.

Creatures you control get +1/+1.

Whenever you tap a land for mana, add one mana of any type that land produced.

{T}: Add {C}.

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

Constellation -- Whenever Nylea's Colossus or another enchantment enters the battlefield under your control, double target creature's power and toughness until end of turn.

When Oblivion Ring enters the battlefield, exile another target nonland permanent.

When Oblivion Ring leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Return all artifact and enchantment cards from all graveyards to the battlefield under their owners' control. (Auras with nothing to enchant remain in graveyards.)

Enchant land

Whenever enchanted land is tapped for mana, its controller adds an additional {G}{G}.

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

Search your library for up to two enchantment cards, reveal them, put them into your hand, then shuffle.

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

Prairie Stream enters the battlefield tapped unless you control two or more basic lands.

({G/W} can be paid with either {G} or {W}.)

Other permanents you control have hexproof. (They can't be the targets of spells or abilities your opponents control.)

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

Quarantine Field enters the battlefield with X isolation counters on it.

When Quarantine Field enters the battlefield, for each isolation counter on it, exile up to one target nonland permanent an opponent controls until Quarantine Field leaves the battlefield.

{T}: Add one mana of any type that a land you control could produce.

You have no maximum hand size.

{T}: Add {C}.

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

{T}: Add {C}.

{4}, {T}: Target creature can't be blocked this turn.

Whenever you cast an enchantment spell, draw a card.

Sea of Clouds enters the battlefield tapped unless you have two or more opponents.

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

Seaside Citadel enters the battlefield tapped.

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

Whenever you cast an enchantment spell, create a 4/4 white Angel creature token with flying.

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

At the beginning of your upkeep, sacrifice Solitary Confinement unless you discard a card.

Skip your draw step.

You have shroud. (You can't be the target of spells or abilities.)

Prevent all damage that would be dealt to you.

Enchant permanent

Enchanted permanent is a colorless Forest land.

Creatures can't attack you or planeswalkers you control unless their controller pays {X} for each of those creatures, where X is the number of enchantments you control.

Other enchantments you control have shroud. (They can't be the targets of spells or abilities.)

{1}, Sacrifice Sterling Grove: Search your library for an enchantment card, reveal it, then shuffle and put that card on top.

Activated abilities of artifacts can't be activated.

Sunpetal Grove enters the battlefield tapped unless you control a Forest or a Plains.

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

This spell can't be countered.

Destroy all creatures.

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

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

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

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.

Tuvasa the Sunlit gets +1/+1 for each enchantment you control.

Whenever you cast your first enchantment spell each turn, draw a card.

Enchant Forest

As Utopia Sprawl enters the battlefield, choose a color.

Whenever enchanted Forest is tapped for mana, its controller adds an additional one mana of the chosen color.

Whenever you cast an enchantment spell, you may draw a card.

Search your library for a permanent card with mana value X or less, put it onto the battlefield, then shuffle.

Constellation -- Whenever Whitewater Naiads or another enchantment enters the battlefield under your control, target creature can't be blocked this turn.

Enchant land

Whenever enchanted land is tapped for mana, its controller adds an additional {G}.

{T}, Pay 1 life, Sacrifice Windswept Heath: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.

{T}: Add {C}.

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

Yavimaya Enchantress gets +1/+1 for each enchantment on the battlefield.