Whenever a creature you control becomes blocked, you may return it to its owner's hand. Whenever one or more creatures you control deal combat damage to a player, draw a card.

Morph {B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) Whenever another nontoken creature you control dies, draw a card.

Look at the top five cards of your library, cloak two of them, and put the rest on the bottom of your library in a random order. (To cloak a card, put it onto the battlefield face down as a 2/2 creature with ward {2}. Turn it face up any time for its mana cost if it's a creature card.)

When you cast this spell, up to two target players each manifest two cards from their hands. For each card manifested this way, you draw a card. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.) Other colorless creatures you control get +3/+2.

You may look at the top card of your library any time. You may cast artifact spells and colorless spells from the top of your library. {T}, Pay 1 life: Exile the top card of your library.

At the beginning of your end step, you may manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.) Exile a face-down permanent you control face up: You may play that card this turn. (You still pay its costs. Timing rules still apply.)

Other creatures you control are Assassins in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield. Face-down creatures you control have menace. Whenever a permanent you control is turned face up, you draw a card and you lose 1 life.

Face-down creatures you control get +0/+1. Whenever a permanent you control is turned face up, draw a card.

Whenever a creature you control with power equal to its toughness enters, you may pay {1}. If you do, draw a card.

Whenever you cast a colorless creature spell, manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.) Whenever you attack with creatures with total power 6 or greater, you may turn a face-down creature you control face up.

Creatures you control have "{T}: Add one mana of any color."

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.

Face-down creature spells you cast cost {1} less to cast.

Face-down creature spells you cast cost {1} less to cast. {1}{G}: Turn this enchantment face down. (It becomes a 2/2 creature.)

{T}: The next face-down creature spell you cast this turn costs {3} less to cast. If turning a face-down permanent face up causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Sacrifice this creature: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

{T}: Manifest a card from your hand. (Put that card onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

When this enchantment enters, draw a card, then you may put a land card from your hand onto the battlefield. If you put a Cave onto the battlefield this way, you gain 4 life. Lands you control enter untapped.

Whenever a face-down creature you control enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle. Whenever a permanent you control is turned face up, if it's a creature, it gets +2/+2 until end of turn.

Colorless spells you cast cost {2} less to cast. +1: Exile the top card of your library face down and look at it. Create a 2/2 colorless Spirit creature token. When that token leaves the battlefield, put the exiled card into your hand. −3: Destroy target permanent that's one or more colors.

Whenever a creature you control attacks, you may put a quest counter on this enchantment. As long as this enchantment has seven or more quest counters on it, creatures you control get +5/+5.

Face-down creatures get +1/+1. {2}{U}: Turn target face-down creature face up.

Deathtouch Whenever a permanent you control is turned face up, you may return this card from your graveyard to the battlefield face up or face down. Megamorph {4}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Creatures with power less than this creature's power can't block it. Megamorph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When this creature is turned face up, return target card from your graveyard to your hand.

Exile all creature cards from target player's graveyard in a face-down pile, shuffle that pile, then manifest those cards. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

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

{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.

{T}: Add {C}. Disguise {3} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When this land is turned face up, add two mana of any one color. Until end of turn, you don't lose this mana as steps and phases end.

{2}, {T}: Add {B} for each Swamp you control.

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

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {U}{B}.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

{T}: Add {C}. {T}, Sacrifice this land: Search your library for a basic Swamp, Forest, or Island card, put it onto the battlefield tapped, then shuffle. Cycling {B}{G}{U} ({B}{G}{U}, Discard this card: Draw a card.)

({T}: Add {G}.)

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {B}{G}.

({T}: Add {U}.)

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

{T}: Add {C}. {T}: Add {C}{C}. Spend this mana only to cast colorless spells. Activate only if you control seven or more lands.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {G}{U}.

({T}: Add {B}.)

{T}: Add {C}{C}. Activate only if you control five or more lands.

{T}: Add {C}. {2}, {T}: This land becomes a copy of target land, except it has this ability.

Each land is a Swamp in addition to its other land types.

{T}: Add {C}. {2}, {T}: You may cast creature spells this turn as though they had flash.

Each land is a Forest in addition to its other land types.

Megamorph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When this creature is turned face up, destroy target artifact or enchantment an opponent controls.

Morph {5}{U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, each opponent skips their next untap step.

Morph {4}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, you may exchange control of target creature you control and target creature an opponent controls.

Destroy all creatures. They can't be regenerated. Draw a card for each creature destroyed this way. Cycling {3}{B}{B} ({3}{B}{B}, Discard this card: Draw a card.) When you cycle this card, all creatures get -2/-2 until end of turn.

This creature can't be blocked by creatures with power 3 or greater. Disguise {1}{U} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When this creature is turned face up, return another target creature to its owner's hand.

Flying Morph {1}{G}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, you may return another target creature to its owner's hand.

As this creature enters, turn all other nontoken creatures face down. (They're 2/2 creatures.) Ixidron's power and toughness are each equal to the number of face-down creatures on the battlefield.

When this creature is turned face up, counter all abilities your opponents control. Megamorph {1}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Morph {4}{U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. You may cast that card without paying its mana cost for as long as it remains exiled.

Target player returns each commander they control from the battlefield to the command zone. Draw a card.

Morph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, destroy target artifact or enchantment.

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

Exile target artifact or creature. Its controller creates a 1/1 blue Bird creature token with flying. Foretell {U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)

Exile target artifact or creature. Its controller creates a 4/4 blue and red Elemental creature token.

Creatures with power greater than this creature's power can't block it. Megamorph {2}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When this creature is turned face up, destroy target creature with power 3 or less an opponent controls.

Flying Megamorph {1}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When this creature is turned face up, counter target instant or sorcery spell.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Exchange control of target noncreature spell and target creature. Then the spell's controller may choose new targets for it.

Choose one — • Destroy target monocolored creature. • Destroy target artifact or enchantment. • Draw two cards, then discard a card.

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

Exile target nontoken creature you own and the top two cards of your library in a face-down pile, shuffle that pile, then cloak those cards. They enter tapped. (To cloak a card, put it onto the battlefield face down as a 2/2 creature with ward {2}. Turn it face up any time for its mana cost if it's a creature card.)

Flash Flying You may cast colorless spells and artifact spells as though they had flash. Whenever you cast a spell, if the amount of mana spent to cast that spell is greater than Liberator's power, put a +1/+1 counter on Liberator.

Deathtouch Whenever a creature you control with deathtouch deals combat damage to a player, put that many +1/+1 counters on that creature. Disguise {B}{G} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.)

Deathtouch Face-down creatures you control have "{2}{U}{B}: Turn this creature face up. If you can't, exile it, then you may cast the exiled card without paying its mana cost." Whenever an Assassin you control deals combat damage to an opponent, cloak the top card of that player's library.