Whenever you cast a spell, you gain 1 life for each spell you've cast this turn. Pay 50 life: Aetherflux Reservoir deals 50 damage to any target.

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

You may look at the top card of your library any time. You may play lands and cast spells from the top of your library. If you cast a spell this way, pay life equal to its mana value rather than pay its mana cost. {T}, Sacrifice ten nonland permanents: Each opponent loses 10 life.

As Heraldic Banner enters the battlefield, choose a color. Creatures you control of the chosen color get +1/+0. {T}: Add one mana of the chosen color.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}

{1}: Look at the top three cards of your library, then put them back in any order. {T}: Draw a card, then put Sensei's Divining Top on top of its owner's library.

Equipped creature gets +1/-1. Whenever equipped creature dies, draw two cards. Equip {1}

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

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.) Equip {1}

Lifelink {1}, Sacrifice Alseid of Life's Bounty: Target creature or enchantment you control gains protection from the color of your choice until end of turn.

Flying, lifelink Pegasus creatures you control have lifelink. Constellation — Whenever an enchantment enters the battlefield under your control, create a 2/2 white Pegasus creature token with flying.

Indestructible As long as your devotion to white and black is less than seven, Athreos isn't a creature. At the beginning of your end step, put a coin counter on another target creature. Whenever a creature with a coin counter on it dies or is put into exile, return that card to the battlefield under your control.

Callaphe's power is equal to your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.) Creatures and enchantments you control have "Spells your opponents cast that target this permanent cost {1} more to cast."

{1}{B}, Sacrifice an artifact or creature: Draw a card.

Constellation — Whenever Doomwake Giant or another enchantment enters the battlefield under your control, creatures your opponents control get -1/-1 until end of turn.

Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is Esper Sentinel's power.

Indestructible As long as your devotion to white is less than five, Heliod isn't a creature. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.) Other creatures you control have vigilance. {2}{W}{W}: Create a 2/1 white Cleric enchantment creature token.

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

Flying At the beginning of your upkeep, return an enchantment you control to its owner's hand.

Flash Flying Other Faerie creatures you control get +1/+1. Other Faeries you control have shroud. (They can't be the targets of spells or abilities.)

You may pay {W} and tap four untapped creatures you control with flying rather than pay this spell's mana cost. Flying, lifelink Other creatures you control with flying have indestructible. (Damage and effects that say "destroy" don't destroy them.)

When Spirited Companion enters the battlefield, draw a card.

Enchantment spells you cast cost {1} less to cast. Whenever an enchantment you control is put into a graveyard from the battlefield, put a +1/+1 counter on Starfield Mystic.

Flying Artifact and enchantment spells you cast cost {1} less to cast.

Constellation — Whenever Underworld Coinsmith or another enchantment enters the battlefield under your control, you gain 1 life. {W}{B}, Pay 1 life: Each opponent loses 1 life.

Enchant creature Enchanted creature gets +1/+1 for each artifact and/or enchantment you control.

When Banishing Light enters the battlefield, exile target nonland permanent an opponent controls until Banishing Light leaves the battlefield.

At the beginning of your upkeep, you lose 1 life and create a 1/1 black Faerie Rogue creature token with flying.

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.

Constellation — Whenever Boon of the Spirit Realm or another enchantment enters the battlefield under your control, put a blessing counter on Boon of the Spirit Realm. Creatures you control get +1/+1 for each blessing counter on Boon of the Spirit Realm.

When Court of Grace enters the battlefield, you become the monarch. At the beginning of your upkeep, create a 1/1 white Spirit creature token with flying. If you're the monarch, create a 4/4 white Angel creature token with flying instead.

Enchant creature Enchanted creature is an Insect artifact creature with base power and toughness 0/1 and has indestructible, and it loses all other abilities, card types, and creature types.

As Etchings of the Chosen enters the battlefield, choose a creature type. Creatures you control of the chosen type get +1/+1. {1}, Sacrifice a creature of the chosen type: Target creature you control gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

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

Creatures you control with flying get +1/+1.

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

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.)

Other enchantments you control have shroud. (A permanent with shroud can't be the target of spells or abilities.) Enchanted creatures you control have shroud.

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

Commander creatures you own have "Creature tokens you control get +2/+2."

Creature tokens you control get +1/+1 and have vigilance.

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

You may have Mirrormade enter the battlefield as a copy of any artifact or enchantment on the battlefield.

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}.

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

Whenever a creature you control deals combat damage to a player, you may draw a card. Cycling {2} ({2}, Discard this card: Draw a card.)

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

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

Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Counter target spell.

This spell can't be countered. Counter target noncreature spell.

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

Destroy target permanent. Its controller creates a 3/3 green Elephant creature token.

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

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

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

Until your next turn, your life total can't change and you gain protection from everything. All permanents you control phase out. (While they're phased out, they're treated as though they don't exist. They phase in before you untap during your untap step.) Exile Teferi's Protection.

{T}: Add {W}.

Arcane Sanctum enters the battlefield tapped. {T}: Add {W}, {U}, or {B}.

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

Indestructible {T}: Add {C}.

{T}: Add {C}. {1}, {T}, Sacrifice Emergence Zone: You may cast spells this turn as though they had flash.

{T}: Add one mana of any color that a land an opponent controls could produce.

({T}: Add {U}.)

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

Morphic Pool enters the battlefield tapped unless you have two or more opponents. {T}: Add {U} or {B}.

{T}: Add {U}. Channel — {3}{U}, Discard Otawara, Soaring City: Return target artifact, creature, enchantment, or planeswalker to its owner's hand. This ability costs {1} less to activate for each legendary creature you control.

({T}: Add {W}.)

{T}, Pay 1 life, Sacrifice Polluted Delta: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.

You have no maximum hand size. {T}: Add {C}.

Sea of Clouds enters the battlefield tapped unless you have two or more opponents. {T}: Add {W} or {U}.

{T}: Add {U}.

({T}: Add {B}.)

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

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

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Urza's Saga gains "{T}: Add {C}." II — Urza's Saga gains "{2}, {T}: Create a 0/0 colorless Construct artifact creature token with 'This creature gets +1/+1 for each artifact you control.'" III — Search your library for an artifact card with mana cost {0} or {1}, put it onto the battlefield, then shuffle.

Vault of Champions enters the battlefield tapped unless you have two or more opponents. {T}: Add {W} or {B}.

{T}: Add {B}.

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.

Destroy target creature. A creature destroyed this way can't be regenerated. Overload {2}{W}{W} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Return up to X target artifact and/or non-Aura enchantment cards each with mana value X or less from your graveyard to the battlefield. If X is 6 or more, those permanents are 4/4 creatures in addition to their other types.

Choose one or more — • Exile all artifacts. • Exile all creatures. • Exile all enchantments. • Exile all graveyards.