As an additional cost to cast this spell, sacrifice a creature. Add X mana in any combination of {B} and/or {R}, where X is the sacrificed creature's mana value.

Add {B}{B}{B}. Threshold — Add {B}{B}{B}{B}{B} instead if seven or more cards are in your graveyard.

At the beginning of each of your main phases, if you haven't added mana with this ability this turn, you may add X mana of any one color, where X is the number of Islands target opponent controls.

Imprint — When this artifact enters, you may exile a nonartifact, nonland card from your hand. {T}: Add one mana of any of the exiled card's colors.

As an additional cost to cast this spell, sacrifice a creature. Add {B}{B}{B}{B}.

Add {B}{B}{B}.

Exile this creature from your hand: Add {G}.

As an additional cost to cast this spell, sacrifice a creature. Add {R}{R}{R}.

Choose one. If you control a commander as you cast this spell, you may choose both instead. • Add {R} for each card in target opponent's hand. • Exile the top three cards of your library. You may play them this turn.

Discard your hand, Sacrifice this artifact: Add three mana of any one color. Activate only as an instant.

{T}, Sacrifice this artifact: Add one mana of any color.

This artifact doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap this artifact. At the beginning of your draw step, if this artifact is tapped, it deals 1 damage to you. {T}: Add {C}{C}{C}.

Add two mana in any combination of colors. Draw a card.

If this artifact would enter, you may discard a land card instead. If you do, put this artifact onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add one mana of any color.

Metalcraft — {T}: Add one mana of any color. Activate only if you control three or more artifacts.

Until end of turn, lands you control gain "Sacrifice this land: Add {B}."

Add {R}{R}, then add {R} for each card named Rite of Flame in each graveyard.

As an additional cost to cast this spell, sacrifice a creature. Add an amount of {B} equal to the sacrificed creature's mana value.

Exile this card from your hand: Add {R}.

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

Create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.") Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target player mills three cards. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Gain control of target creature with mana value 3 or less until end of turn. Untap that creature. It gains haste until end of turn.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Untap target creature. Until end of turn, it gains hexproof, reach, and "Whenever this creature becomes tapped, it deals damage equal to its power to up to one target creature."

Choose one — • Put a +1/+1 counter on target creature or Vehicle. Untap it. • Return target permanent you control to its owner's hand.

({G/P} can be paid with either {G} or 2 life.) Put target card from a graveyard on top of its owner's library.

When this creature enters, 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.)

Return target nonland permanent to its owner's hand. Then that permanent's controller may sacrifice a land of their choice. If the player does, they may copy this spell and may choose a new target for that copy.

If you control a commander, you may cast this spell without paying its mana cost. Exile target creature.

Choose one — • Untap target permanent. • Destroy target non-Aura enchantment. • Target creature loses flying until end of turn.

Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before its other effects.) Return target creature an opponent controls to its owner's hand. If the gift was promised, instead return target nonland permanent an opponent controls to its owner's hand.

Destroy target artifact or enchantment. Its controller gains 4 life.

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

You may exile a blue card from your hand rather than pay this spell's mana cost. Return target creature to its owner's hand.

Exile target creature and put two time counters on it. If it doesn't have suspend, it gains suspend. (At the beginning of its owner's upkeep, they remove a time counter. When the last is removed, they may play it without paying its mana cost. If it's a creature, it has haste.)

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

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Spells you control can't be countered by blue or black spells this turn, and creatures you control can't be the targets of blue or black spells this turn.

You may return an Island you control to its owner's hand rather than pay this spell's mana cost. Counter target spell unless its controller pays {1}.

If you control a commander, you may cast this spell without paying its mana cost. You may choose new targets for target spell or ability.

If you control a commander, you may cast this spell without paying its mana cost. Counter target noncreature spell.

Counter target instant or sorcery spell unless its controller pays {1}. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost. Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost. Counter target spell.

({U/P} can be paid with either {U} or 2 life.) Counter target spell with mana value 1.

You may exile a blue card from your hand rather than pay this spell's mana cost. Change the target of target spell with a single target.

Choose one — • Counter target spell if it's blue. • Destroy target permanent if it's blue.

Choose one — • Counter target blue spell. • Destroy target blue permanent.

Your opponents can't cast spells this turn.

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

Converge — Search your library for a creature, instant, or sorcery card with mana value less than or equal to the number of colors of mana spent to cast this spell, exile that card, then shuffle. You may cast that card without paying its mana cost.

As an additional cost to cast this spell, sacrifice a land. Search your library for a land card, put that card onto the battlefield, then shuffle.

Choose a card name. Exile the top six cards of your library, then reveal cards from the top of your library until you reveal a card with the chosen name. Put that card into your hand and exile all other cards revealed this way.

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

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

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

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

Suspend 2—{1}{B} (Rather than cast this card from your hand, pay {1}{B} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) Search your library for a card, put that card into your hand, then shuffle.

Exile the top card of your library. You may put that card into your hand unless it has the same name as another card exiled this way. Repeat this process until you put a card into your hand or you exile two cards with the same name, whichever comes first.

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Reveal the top card of your library and put that card into your hand. You lose life equal to its mana value. You may repeat this process any number of times.

({U/P} can be paid with either {U} or 2 life.) Look at target player's hand. Draw a card.

{T}: Add {C}{C}. This land deals 2 damage to you.

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

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

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

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

{T}: Add {G}. Channel — {1}{G}, Discard this card: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.

Whenever this land becomes tapped, it deals 1 damage to you. {T}: Add one mana of any color.

When you play another land, sacrifice this land. {T}: Add {C}{C}.

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

{T}: Add {C}. {T}, Sacrifice this land: Add {C}{C}.

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

If this card is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand. {T}: Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.

{T}, Pay 1 life: Add one mana of any color.

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

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

{T}: Add {C}. {T}, Sacrifice a creature: Add {B}{B}.

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

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

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

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

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

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

When this land enters, up to one target creature phases out. {T}: Add {C}. {1}, {T}: Add one mana of any color. {4}: Put this card from your hand onto the battlefield.

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

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

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

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

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

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