This spell can't be countered. You may have Altered Ego enter the battlefield as a copy of any creature on the battlefield, except it enters with X additional +1/+1 counters on it.

For Mirrodin! (When this Equipment enters the battlefield, create a 2/2 red Rebel creature token, then attach this to it.) Whenever Blade of Shared Souls becomes attached to a creature, for as long as Blade of Shared Souls remains attached to it, you may have that creature become a copy of another target creature you control. Equip {2}

Create a token that's a copy of target creature you control. Flashback {5}{U}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create a token that's a copy of target non-Frog creature, except it's a 1/1 green Frog. Flashback {3}{G}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

For each of X target permanents, create X tokens that are copies of that permanent.

Copy target creature spell you control, except it isn't legendary if the spell is legendary. (A copy of a creature spell becomes a token.)

Create a token that's a copy of target creature you control. If it's your turn, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Myojin of Cryptic Dreams enters the battlefield with an indestructible counter on it if you cast it from your hand. Remove an indestructible counter from Myojin of Cryptic Dreams: Copy target permanent spell you control three times. (The copies become tokens.)

You may have Progenitor Mimic enter the battlefield as a copy of any creature on the battlefield, except it has "At the beginning of your upkeep, if this creature isn't a token, create a token that's a copy of this creature."

Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their copies.) Create a token that's a copy of target permanent you control.

When Fractal Harness enters the battlefield, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it and attach Fractal Harness to it. Whenever equipped creature attacks, double the number of +1/+1 counters on it. Equip {2}

{1}{G}{U}: Put a +1/+1 counter on target creature you control. Whenever one or more +1/+1 counters are put on a creature you control, put that many growth counters on Simic Ascendancy. At the beginning of your upkeep, if Simic Ascendancy has twenty or more growth counters on it, you win the game.

Draw two cards. You may put a land card from your hand onto the battlefield.

{2}{G}{U}: Draw a card. You may put a land card from your hand onto the battlefield.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Ward {3} When Interdisciplinary Mascot enters the battlefield, look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in a random order.

+1: Until your next turn, prevent all damage that would be dealt to and dealt by target permanent an opponent controls. −1: Draw a card. You may play an additional land this turn. −5: You get an emblem with "At the beginning of your end step, create a 9/9 blue Kraken creature token."

At the beginning of the end step, if you control four or more creatures named Biovisionary, you win the game.

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

Dreamroot Cascade enters the battlefield tapped unless you control two or more other lands. {T}: Add {G} or {U}.

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

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

{T}: Add {C}. {G/U}, {T}: Add {G}{G}, {G}{U}, or {U}{U}.

({T}: Add {G}.)

Hinterland Harbor enters the battlefield tapped unless you control a Forest or an Island. {T}: Add {G} or {U}.

({T}: Add {U}.)

Kitchen enters the battlefield tapped. {T}: Add {G} or {U}. {4}, {T}: Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Lumbering Falls enters the battlefield tapped. {T}: Add {G} or {U}. {2}{G}{U}: Lumbering Falls becomes a 3/3 green and blue Elemental creature with hexproof until end of turn. It's still a land.

{T}: Add {C}. {1}, {T}: Add one mana of any color in your commander's color identity. If you spend this mana to cast your commander, it enters the battlefield with a number of additional +1/+1 counters on it equal to the number of times it's been cast from the command zone this game.

Path of Ancestry enters the battlefield 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.)

Quandrix Campus enters the battlefield tapped. {T}: Add {G} or {U}. {4}, {T}: Scry 1.

Restless Vinestalk enters the battlefield tapped. {T}: Add {G} or {U}. {3}{G}{U}: Until end of turn, Restless Vinestalk becomes a 5/5 green and blue Plant creature with trample. It's still a land. Whenever Restless Vinestalk attacks, up to one other target creature has base power and toughness 3/3 until end of turn.

Seafloor Debris enters the battlefield tapped. {T}: Add {U}. {T}, Sacrifice Seafloor Debris: Add one mana of any color.

Simic Growth Chamber enters the battlefield tapped. When Simic Growth Chamber enters the battlefield, return a land you control to its owner's hand. {T}: Add {G}{U}.

Simic Guildgate enters the battlefield tapped. {T}: Add {G} or {U}.

({T}: Add {G} or {U}.) Tangled Islet enters the battlefield tapped.

Tanglepool Bridge enters the battlefield tapped. Indestructible {T}: Add {G} or {U}.

Temple of Mystery enters the battlefield tapped. When Temple of Mystery enters the battlefield, scry 1. {T}: Add {G} or {U}.

Thornwood Falls enters the battlefield tapped. When Thornwood Falls enters the battlefield, you gain 1 life. {T}: Add {G} or {U}.

Thriving Grove enters the battlefield tapped. As Thriving Grove enters the battlefield, choose a color other than green. {T}: Add {G} or one mana of the chosen color.

Thriving Isle enters the battlefield tapped. As Thriving Isle enters the battlefield, choose a color other than blue. {T}: Add {U} or one mana of the chosen color.

Timberland Ruins enters the battlefield tapped. {T}: Add {G}. {T}, Sacrifice Timberland Ruins: Add one mana of any color.

As Vineglimmer Snarl enters the battlefield, you may reveal a Forest or Island card from your hand. If you don't, Vineglimmer Snarl enters the battlefield tapped. {T}: Add {G} or {U}.

{T}, Pay 1 life: Add {G} or {U}. {1}, {T}, Sacrifice Waterlogged Grove: Draw a card.

Until end of turn, target land becomes a 3/3 creature that's still a land.

Flying When Cyclone Sire dies, you may put three +1/+1 counters on target land you control. If you do, that land becomes a 0/0 Elemental creature with haste that's still a land.

Enchant land Enchanted land is a 6/4 green Elemental creature. It's still a land. When enchanted land dies, return that card to its owner's hand.

{G}{G}{G}{G}{G}: Untap target land you control. It becomes a 5/5 Elemental creature with haste. It's still a land. (This effect lasts as long as that land remains on the battlefield.)

Landfall — Whenever a land enters the battlefield under your control, choose one — • You may tap or untap target creature. • Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

At the beginning of your upkeep, you may create a 0/1 colorless Eldrazi Spawn creature token. It has "Sacrifice this creature: Add {C}."

Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. That land becomes a 0/0 green and blue Fractal creature that's still a land. Put a +1/+1 counter on it for each land you had enter the battlefield under your control this turn.

Draw a card. You may put a land card from your hand onto the battlefield.

Landfall — Whenever a land enters the battlefield under your control, add one mana of any color.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Search your library for up to two basic Forest cards, reveal those cards, and put one onto the battlefield tapped and the rest into your hand. Then shuffle. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, search your library for up to three basic Forest cards instead of two.

Search your library for up to three basic land cards, put them onto the battlefield tapped, then shuffle. You gain 7 life.

Search your library for up to two basic Forest cards. If you control a Nissa planeswalker, instead search your library for up to three land cards. Reveal those cards, put them into your hand, then shuffle.

+2: Scry 2. 0: Look at the top card of your library. If it's a land card or a creature card with mana value less than or equal to the number of loyalty counters on Nissa, Steward of Elements, you may put that card onto the battlefield. −6: Untap up to two target lands you control. They become 5/5 Elemental creatures with flying and haste until end of turn. They're still lands.

{T}: Add {G} or {U}. {G}{U}: Simic Keyrune becomes a 2/3 green and blue Crab artifact creature with hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

Exile a creature card from your graveyard and pay its mana cost: Create a token that's a copy of that card. Activate only as a sorcery.

When Exchange of Words enters the battlefield, choose two target creatures. For as long as Exchange of Words remains on the battlefield, exchange the text boxes of those creatures.

Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) If one or more tokens would be created under your control, twice that many of those tokens are created instead.

When Biomathematician enters the battlefield, create a 0/0 green and blue Fractal creature token. Put a +1/+1 counter on each Fractal you control.

Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is the number of cards in your library.

Magecraft — Whenever you cast or copy an instant or sorcery spell, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is that spell's mana value. {3}{U}: Target creature token can't be blocked this turn.

When Esika's Chariot enters the battlefield, create two 2/2 green Cat creature tokens. Whenever Esika's Chariot attacks, create a token that's a copy of target token you control. Crew 4

Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it.

Whenever a player casts an instant or sorcery spell, put a number of charge counters on Geometric Nexus equal to that spell's mana value. {6}, {T}, Remove all charge counters from Geometric Nexus: Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is the number of charge counters removed this way.

Flying, deathtouch When Hornet Queen enters the battlefield, create four 1/1 green Insect creature tokens with flying and deathtouch.

Each other planeswalker you control has the loyalty abilities of Kasmina, Enigma Sage. +2: Scry 1. −X: Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it. −8: Search your library for an instant or sorcery card that shares a color with this planeswalker, exile that card, then shuffle. You may cast that card without paying its mana cost.

Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is the number of lands you control.

When Manifestation Sage enters the battlefield, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is the number of cards in your hand.

When Myr Battlesphere enters the battlefield, create four 1/1 colorless Myr artifact creature tokens. Whenever Myr Battlesphere attacks, you may tap X untapped Myr you control. If you do, Myr Battlesphere gets +X/+0 until end of turn and deals X damage to the player or planeswalker it's attacking.

Paradox Zone enters the battlefield with a growth counter on it. At the beginning of your end step, double the number of growth counters on Paradox Zone. Then create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is the number of growth counters on Paradox Zone.

If one or more tokens would be created, twice that many of those tokens are created instead. If one or more +1/+1 counters would be put on a creature, twice that many +1/+1 counters are put on that creature instead.

{X}, {T}: Exile target creature card with mana value X from a graveyard. Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it. Activate only as a sorcery.