Changeling (This card is every creature type.) {X}: Until end of turn, creatures you control have base power and toughness X/X and gain all creature types.

Mutate {5}{G} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Whenever this creature mutates, exile cards from the top of your library until you exile X permanent cards, where X is the number of times this creature has mutated. Put those permanent cards onto the battlefield.

Vigilance Whenever you cast a creature spell, draw a card, then you may put a land card from your hand onto the battlefield. {3}, {T}: Return target creature you control to its owner's hand.

Choose a creature type. Draw a card for each permanent you control of that type.

Mutate {3}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Flying Whenever this creature mutates, draw a card.

At the beginning of combat on your turn, choose one — • Creatures you control get +1/+1 and gain trample until end of turn. • Target land gains "{T}: Add {G}{G}{G}" until end of turn. • Draw a card if you control a creature with power 3 or greater. • You gain 3 life.

Whenever one or more non-Human creatures you control deal combat damage to a player, draw a card.

At the beginning of your upkeep, scry 1. Whenever you cast a creature spell, you may pay {G}. If you do, draw a card.

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

{T}: Add {W}.

{3}, Sacrifice this creature: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

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

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

{T}: Add {G}.

Vigilance This creature gets +1/+1 for each color among permanents you control. {T}: For each color among permanents you control, add one mana of that color.

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

When this creature enters, it deals 2 damage to each opponent and you scry 2. {2}, Exile this card from your hand: Target land gains "{T}: Add {U}, {B}, or {R}" until this card is cast from exile. You may cast this card for as long as it remains exiled.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell.

{T}: Add one mana of any color. If you control a creature with power 4 or greater, add two mana of any one color instead.

Lifelink Menace (This creature can't be blocked except by two or more creatures.) Spells you cast that target a creature cost {2} less to cast.

{T}: Add {G} for each creature with power 4 or greater you control. {7}{R}: This creature deals damage equal to its power to target player or planeswalker.

When this creature enters, draw a card. {T}: Add {G}.

Flying {T}: Add {G} or {U}.

Vigilance Menace (This creature can't be blocked except by two or more creatures.) {2}, Exile this card from your hand: Target land gains "{T}: Add {B}, {R}, or {G}" until this card is cast from exile. You may cast this card for as long as it remains exiled.

Mutate {2}{G} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Whenever this creature mutates, search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Each creature spell you cast costs {1} less to cast if it has mutate. Whenever you cast a creature spell, if it has mutate, draw a card, then discard a card.

When this creature enters, create a 1/1 green and white Citizen creature token. {2}, Exile this card from your hand: Target land gains "{T}: Add {R}, {G}, or {W}" until this card is cast from exile. You may cast this card for as long as it remains exiled.

Green creature spells you cast cost {1} less to cast. Whenever you cast a creature spell, target creature you control gets +2/+2 and gains trample until end of turn.

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

Flying When this creature enters, you gain 3 life. {2}, Exile this card from your hand: Target land gains "{T}: Add {W}, {U}, or {B}" until this card is cast from exile. You may cast this card for as long as it remains exiled.

{T}: Add {B} or {G}. {T}: Mill two cards.

{T}: Add three mana of any one color. Spend this mana only to cast creature spells.

When this creature enters, target creature an opponent controls can't attack or block until your next turn. {2}, Exile this card from your hand: Target land gains "{T}: Add {G}, {W}, or {U}" until this card is cast from exile. You may cast this card for as long as it remains exiled.

Whenever a creature you control mutates, put a +1/+1 counter on that creature and you gain 2 life.

Mutate {3}{G} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Reach Whenever this creature mutates, put two +1/+1 counters on it.

Return target creature card from your graveyard to the battlefield. When you do, it fights up to one target creature you don't control. (Each deals damage equal to its power to the other.)

Flash Vigilance, reach, trample

Bestow {6}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Whenever this creature or enchanted creature attacks, tap target creature an opponent controls. Enchanted creature gets +3/+3.

When this creature dies, you gain 2 life.

When this creature enters, you gain 2 life.

When this land enters, sacrifice it. When you do, search your library for a basic Forest, Plains, or Island card, put it onto the battlefield tapped, then shuffle and you gain 1 life.

When this land enters, sacrifice it. When you do, search your library for a basic Mountain, Forest, or Plains card, put it onto the battlefield tapped, then shuffle and you gain 1 life.

({T}: Add {G}.)

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

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

({T}: Add {W}, {B}, or {G}.) This land enters tapped. Cycling {3} ({3}, Discard this card: Draw a card.)

({T}: Add {U}.)

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

({T}: Add {R}.)

This land enters tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

({T}: Add {W}.)

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

({T}: Add {B}.)

As this land enters, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

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

Mutate {5}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Whenever this creature mutates, tap up to X target creatures, where X is the number of times this creature has mutated. Those creatures don't untap during their controller's next untap step.

Mutate {3}{B} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Menace (This creature can't be blocked except by two or more creatures.) Whenever this creature mutates, each opponent discards a card.

Mutate {4}{B} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Whenever this creature mutates, each opponent sacrifices a creature of their choice.

Mutate {4}{B}{B} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Flash Flying Whenever this creature mutates, destroy target creature or planeswalker an opponent controls.

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.) Cycling {1} ({1}, Discard this card: Draw a card.)

Mutate {3}{U} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Flash Whenever this creature mutates, you may return target creature an opponent controls to its owner's hand.

Destroy target artifact or creature. It can't be regenerated.

When this creature enters, you may have it fight target creature you don't control.

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