Cleave {4}{U}{U}{R} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)

Take an extra turn after this one. During that turn, damage can't be prevented. [At the beginning of that turn's end step, you lose the game.]

Exile Alchemist's Gambit.

Look at the top four 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.

Flashback {3}{U}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Beacon Bolt deals damage to target creature equal to the total number of instant and sorcery cards you own in exile and in your graveyard.

Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

Choose any target. Draw three cards, then discard a card. Blast of Genius deals damage equal to the discarded card's mana value to that permanent or player.

Flying

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

When Bloodwater Entity enters the battlefield, you may put target instant or sorcery card from your graveyard on top of your library.

Caldera Lake enters the battlefield tapped.

{T}: Add {C}.

{T}: Add {U} or {R}. Caldera Lake deals 1 damage to you.

{T}: Add {C}.

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

Exile any number of target creatures controlled by different players. For each creature exiled this way, its controller reveals cards from the top of their library until they reveal a creature card, puts that card onto the battlefield, then puts the rest on the bottom of their library in a random order.

Whenever you cast a multicolored instant or sorcery spell, you may pay {1}. If you do, copy that spell. You may choose new targets for the copy.

This spell can't be countered.

Counter target spell you don't control.

Overload {1}{U}{U}{R} (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")

+1: Target player draws two cards, then discards two cards.

-2: Gain control of target artifact.

-6: You get an emblem with "Whenever you cast a spell that targets one or more permanents, gain control of those permanents."

You may have Dack's Duplicate enter the battlefield as a copy of any creature on the battlefield, except it has haste and dethrone. (Whenever it attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)

{T}: Add {C}.

{1}{U}{R}, {T}: Draw a card, then discard a card.

Counter up to two target spells.

Counter target creature spell. Essence Backlash deals damage equal to that spell's power to its controller.

Whenever you cast an instant or sorcery spell, put a charge counter on Firemind's Research.

{1}{U}, Remove two charge counters from Firemind's Research: Draw a card.

{1}{R}, Remove five charge counters from Firemind's Research: It deals 5 damage to any target.

As Frostboil Snarl enters the battlefield, you may reveal an Island or Mountain card from your hand. If you don't, Frostboil Snarl enters the battlefield tapped.

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

When you cast your next instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.

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

Geistblast deals 2 damage to any target.

{2}{U}, Exile Geistblast from your graveyard: Copy target instant or sorcery spell you control. You may choose new targets for the copy.

{T}: Gelectrode deals 1 damage to any target.

Whenever you cast an instant or sorcery spell, you may untap Gelectrode.

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

Flying, haste

You may cast sorcery spells as though they had flash. (You may cast them any time you could cast an instant.)

Draw two cards. Then you may discard a nonland card. When you do, Hypothesizzle deals 4 damage to target creature.

Whenever you draw your second card each turn, create a 1/1 blue Faerie creature token with flying.

{4}{U}{R}: Draw a card, then discard a card.

Amass X, where X is the number of instant and sorcery cards in your graveyard. (Put X +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.)

Choose one --

• Draw X cards.

• Invoke the Firemind deals X damage to any target.

Counter target spell. Ionize deals 2 damage to that spell's controller.

Izzet Boilerworks enters the battlefield tapped.

When Izzet Boilerworks enters the battlefield, return a land you control to its owner's hand.

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

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

Indestructible

As long as your devotion to blue and red is less than seven, Keranos isn't a creature.

Reveal the first card you draw on each of your turns. Whenever you reveal a land card this way, draw a card. Whenever you reveal a nonland card this way, Keranos deals 3 damage to any target.

Play with the top card of your library revealed.

You may cast instant and sorcery spells from the top of your library.

Whenever you cast an instant or sorcery spell from your library, copy it. You may choose new targets for the copy.

Counter target spell unless its controller pays {X}. Mindswipe deals X damage to that spell's controller.

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

Molten Tributary enters the battlefield tapped.

Flying

Whenever Niv-Mizzet, Dracogenius deals damage to a player, you may draw a card.

{U}{R}: Niv-Mizzet, Dracogenius deals 1 damage to any target.

This spell can't be countered.

Flying

Whenever you draw a card, Niv-Mizzet, Parun deals 1 damage to any target.

Whenever a player casts an instant or sorcery spell, you draw a card.

Flying

Whenever you draw a card, Niv-Mizzet, the Firemind deals 1 damage to any target.

{T}: Draw a card.

{T}: Add {C}.

{2}{U}{R}, {T}: Exile the top card of your library. Until your next turn, you may cast it if it's an instant or sorcery spell.

Draw four cards. Then discard two cards unless you discard an instant or sorcery card.

Prismari Campus enters the battlefield tapped.

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

{4}, {T}: Scry 1.

Choose two --

• Prismari Command deals 2 damage to any target.

• Target player draws two cards, then discards two cards.

• Target player creates a Treasure token.

• Destroy target artifact.

+1: Tap target permanent, then untap another target permanent.

-2: Ral Zarek deals 3 damage to any target.

-7: Flip five coins. Take an extra turn after this one for each coin that comes up heads.

+1: Draw a card.

-2: Ral, Caller of Storms deals 3 damage divided as you choose among one, two, or three targets.

-7: Draw seven cards. Ral, Caller of Storms deals 7 damage to each creature your opponents control.

+1: Look at the top two cards of your library. Put one of them into your hand and the other into your graveyard.

-3: Ral, Izzet Viceroy deals damage to target creature equal to the total number of instant and sorcery cards you own in exile and in your graveyard.

-8: You get an emblem with "Whenever you cast an instant or sorcery spell, this emblem deals 4 damage to any target and you draw two cards."

Whenever you cast or copy an instant or sorcery spell, Ral, Storm Conduit deals 1 damage to target opponent or planeswalker.

+2: Scry 1.

-2: When you cast your next instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.

Counter target spell. You may cast a spell with an equal or lesser mana value from your hand without paying its mana cost.

{T}: Add {U}.

{T}: Add {R}.

Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token.

-2: Target artifact you control becomes a copy of another target artifact or creature you control until end of turn, except it's an artifact in addition to its other types.

Silverbluff Bridge enters the battlefield tapped.

Indestructible

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

(Gain the next level as a sorcery to add its ability.)

When Sorcerer Class enters the battlefield, draw two cards, then discard two cards.

{U}{R}: Level 2

Creatures you control have "{T}: Add {U} or {R}. Spend this mana only to cast an instant or sorcery spell or to gain a Class level."

{3}{U}{R}: Level 3

Whenever you cast an instant or sorcery spell, that spell deals damage to each opponent equal to the number of instant and sorcery spells you've cast this turn.

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

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

Stormcarved Coast enters the battlefield tapped unless you control two or more other lands.

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

Counter target spell and Suffocating Blast deals 3 damage to target creature.

Change the target of target spell with a single target.

{T}: Add {C}.

{T}: Add {U} or {R}. Talisman of Creativity deals 1 damage to you.

When you cast your next instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.

Whenever you cast an instant or sorcery spell, copy it for each other instant and sorcery spell you've cast before it this turn. You may choose new targets for the copies.

Training Center enters the battlefield tapped unless you have two or more opponents.

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

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