Flying When Niv-Mizzet enters, reveal the top ten cards of your library. For each color pair, choose a card that's exactly those colors from among them. Put the chosen cards into your hand and the rest on the bottom of your library in a random order.

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the beginning of the next turn's upkeep.

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.

Choose one — • Boros Charm deals 4 damage to target player or planeswalker. • Permanents you control gain indestructible until end of turn. • Target creature gains double strike until end of turn.

Choose one — • All creatures get -1/-1 until end of turn. • Destroy target enchantment. • Regenerate each creature you control.

As an additional cost to cast this spell, sacrifice a land. Search your library for up to two basic land cards, put them onto the battlefield, then shuffle.

Choose one — • Counter target noncreature spell unless its controller pays {2}. • Izzet Charm deals 2 damage to target creature. • Draw two cards, then discard two cards.

Choose one — • Return target creature you control and all Auras you control attached to it to their owner's hand. • Destroy target creature and you lose life equal to its toughness. • Return target creature card with mana value 1 or less from your graveyard to the battlefield.

Choose one — • Exile target player's graveyard. • Destroy target artifact. • Each creature deals 1 damage to its controller.

Choose one — • Target creature gets +2/+2 and gains trample until end of turn. • Exile target creature with power 5 or greater. • Create a 2/2 white Knight creature token with vigilance.

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

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

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

{T}: Add one mana of any color in your commander's color identity. Sacrifice this artifact: Draw a card.

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

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

Equipped creature gets +1/+0 for each Gate you control and has vigilance and menace. (A creature with menace can't be blocked except by two or more creatures.) Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)

{1}, {T}: Add {B}{G}.

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

Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Imprint — When this artifact enters, 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.

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

{2}, {T}, Sacrifice this artifact: Search your library for up to two basic land cards and/or Gate cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

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

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

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

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

This land enters tapped. {T}: Add {W} or {U}.

This land enters tapped. As this land enters, choose a color other than black. {T}: Add {B} or one mana of the chosen color.

This land enters tapped. {T}: Add {R} or {W}.

This land enters tapped. As this land enters, choose a color other than white. {T}: Add {W} or one mana of the chosen color.

This land enters tapped. As this land enters, choose a color other than red. {T}: Add {R} or one mana of the chosen color.

This land enters tapped. {T}: Add {U} or {B}.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {G}.)

This land enters tapped. {T}: Add {B} or {G}.

Gates you control enter untapped. {T}: Add {C}. {T}: Add one mana of any color that a Gate you control could produce.

This land enters tapped. {T}: Add {R} or {G}.

{T}: Add {C}. {1}, {T}: Add one mana of any color. {1}, {T}, Tap an untapped Gate you control: Create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

({T}: Add {U}.)

This land enters tapped. {T}: Add {U} or {R}.

This land enters tapped. As this land enters, choose a color other than green. {T}: Add {G} or one mana of the chosen color.

({T}: Add {R}.)

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

This land enters tapped. {T}: Add {W} or {B}.

({T}: Add {W}.)

This land enters tapped. {T}: Add {B} or {R}.

This land enters tapped. As this land enters, choose a color other than blue. {T}: Add {U} or one mana of the chosen color.

This land enters tapped. {T}: Add {G} or {W}.

This land enters tapped. {T}: Add {G} or {U}.

({T}: Add {B}.)

Flying When this creature enters, you gain 2 life for each Gate you control.

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

{G}, {T}: Creatures you control gain trample until end of turn. {5}{W}, {T}: Create a 2/2 green and white Elf Knight creature token with vigilance.

{3}{B}, {T}: Target player discards a card. Activate only as a sorcery. {R}, {T}: This creature deals 1 damage to target opponent or planeswalker.

({U/B} can be paid with either {U} or {B}.) {3}{U}: Target player draws a card. Activate only as a sorcery. {3}{B}: Target player discards a card. Activate only as a sorcery.

When this creature enters, you may search your library for a basic land card or Gate card, reveal it, put it into your hand, then shuffle.

This creature has double strike as long as you control a Gate.

This creature gets +1/+1 for each Gate you control. As long as you control two or more Gates, this creature has vigilance and trample.

Defender When this creature enters, you may search your library for a basic land card or a Gate card, reveal it, put it into your hand, then shuffle.

({U/R} can be paid with either {U} or {R}.) {2}{U}: Copy target instant spell you control with mana value 2 or less. You may choose new targets for the copy. {2}{R}: Copy target sorcery spell you control with mana value 2 or less. You may choose new targets for the copy.

{3}{U}, {T}: Draw a card. {X}{R}, {T}: Copy target instant or sorcery spell you control with mana value X. You may choose new targets for the copy.

{5}{R}, {T}: This creature deals 3 damage to each opponent. {2}{W}, {T}: Tap another target creature.

{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.)

{1}{U}{R}: Draw a card, then discard a card. {2}{U}{R}: Copy target instant or sorcery spell you control. You may choose new targets for the copy.

{2}{W}: Target player gains 1 life. {2}{B}: Each player loses 1 life.

{3}{G}: Create a 1/1 green Saproling creature token. {3}{W}: Creatures you control get +1/+1 until end of turn.

{W}, {T}: You gain 2 life. {U}, {T}: Draw a card, then discard a card.

{R}{G}: Creatures you control gain trample until end of turn. {1}{R}{G}: Target land you control becomes a 4/4 Elemental creature until end of turn. It's still a land.

{1}{R}{W}: Creatures you control get +1/+0 until end of turn. {2}{R}{W}: Create a 1/1 red and white Soldier creature token with haste.

{4}{B}, {T}: Creatures you control get +1/+0 and gain menace until end of turn. (They can't be blocked except by two or more creatures.) {1}{G}, {T}: You gain 2 life.

{1}{W}, {T}: Tap target creature with power 4 or greater. {4}{B}, {T}: This creature deals 2 damage to target opponent or planeswalker.

{1}{W}{B}: Target creature gains lifelink until end of turn. {1}{W}{B}: Whenever you gain life this turn, each opponent loses that much life.

Search your library for up to two basic land cards and/or Gate cards, put them onto the battlefield tapped, then shuffle.

Search your library for up to two basic land cards and/or Gate cards, put them onto the battlefield tapped, then shuffle. You take the initiative.

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

Gates Ablaze deals X damage to each creature, where X is the number of Gates you control.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Search your library for a basic land card or Gate card, reveal it, put it into your hand, then shuffle.

Tap an untapped Gate you control: This enchantment deals 1 damage to each opponent.

When this enchantment enters, you may tap any number of untapped Gates you control. Draw a card for each Gate tapped this way. Whenever a Gate you control enters, draw a card.

Creatures you control get +0/+1 for each Gate you control and have vigilance.