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.
0 /
0
{X}{G}
Animist's Awakening
Sorcery
Reveal the top X cards of your library. Put all land cards from among them onto the battlefield tapped and the rest on the bottom of your library in a random order.
Spell mastery -- If there are two or more instant and/or sorcery cards in your graveyard, untap those lands.
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
--
Barkchannel Pathway
Land
{T}: Add {G}.
--
Tidechannel Pathway
Land
{T}: Add {U}.
{3}
Basalt Monolith
Artifact
Basalt Monolith doesn't untap during your untap step.
{T}: Add {C}{C}{C}.
{3}: Untap Basalt Monolith.
{G}
Birds of Paradise
Creature - Bird
Flying
{T}: Add one mana of any color.
0 /
1
{X}{U}{U}{U}
Blue Sun's Zenith
Instant
Target player draws X cards. Shuffle Blue Sun's Zenith into its owner's library.
--
Botanical Sanctum
Land
Botanical Sanctum enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {G} or {U}.
--
Breeding Pool
Land - Forest Island
({T}: Add {G} or {U}.)
As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{X}{G}{G}{G}
Chord of Calling
Instant
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 a creature card with mana value X or less, put it onto the battlefield, then shuffle.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{U}{U}
Counterspell
Instant
Counter target spell.
{X}{X}
Cryptic Trilobite
Creature - Trilobite
Cryptic Trilobite enters the battlefield with X +1/+1 counters on it.
Remove a +1/+1 counter from Cryptic Trilobite: Add {C}{C}. Spend this mana only to activate abilities.
{1}, {T}: Put a +1/+1 counter on Cryptic Trilobite.
0 /
0
--
Dreamroot Cascade
Land
Dreamroot Cascade enters the battlefield tapped unless you control two or more other lands.
{T}: Add {G} or {U}.
--
Dryad Arbor
Land Creature - Forest Dryad
(Dryad Arbor isn't a spell, it's affected by summoning sickness, and it has "{T}: Add {G}.")
1 /
1
{2}{G}
Dryad of the Ilysian Grove
Enchantment Creature - Nymph Dryad
You may play an additional land on each of your turns.
Lands you control are every basic land type in addition to their other types.
2 /
4
{X}{2}{G}
Ecological Appreciation
Sorcery
Search your library and graveyard for up to four creature cards with different names that each have mana value X or less and reveal them. An opponent chooses two of those cards. Shuffle the chosen cards into your library and put the rest onto the battlefield. Exile Ecological Appreciation.
{2}{G}{G}
Elemental Resonance
Enchantment - Aura
Enchant permanent
At the beginning of your precombat main phase, add mana equal to enchanted permanent's mana cost. (Mana cost includes color. If a mana symbol has multiple colors, choose one.)
{G}
Elvish Mystic
Creature - Elf Druid
{T}: Add {G}.
1 /
1
{13}
Emrakul, the Promised End
Legendary Creature - Eldrazi
This spell costs {1} less to cast for each card type among cards in your graveyard.
When you cast this spell, you gain control of target opponent during that player's next turn. After that turn, that player takes an extra turn.
Flying, trample, protection from instants
13 /
13
{X}{G}
Enshrined Memories
Sorcery
Reveal the top X cards of your library. Put all creature cards revealed this way into your hand and the rest on the bottom of your library in any order.
{X}{U}{U}
Fascination
Sorcery
Choose one --
• Each player draws X cards.
• Each player mills X cards.
{X}{G}
Feral Hydra
Creature - Hydra Beast
Feral Hydra enters with X +1/+1 counters on it.
{3}: Put a +1/+1 counter on Feral Hydra. Any player may activate this ability.
0 /
0
{X}{G}{G}
Finale of Devastation
Sorcery
Search your library and/or graveyard for a creature card with mana value X or less and put it onto the battlefield. If you search your library this way, shuffle. If X is 10 or more, creatures you control get +X/+X and gain haste until end of turn.
{X}{U}{U}
Finale of Revelation
Sorcery
Draw X cards. If X is 10 or more, instead shuffle your graveyard into your library, draw X cards, untap up to five lands, and you have no maximum hand size for the rest of the game.
Exile Finale of Revelation.
--
Flooded Grove
Land
{T}: Add {C}.
{G/U}, {T}: Add {G}{G}, {G}{U}, or {U}{U}.
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
{X}{2}{G}
Fractal Harness
Artifact - Equipment
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}
{X}{U}{U}{U}
Gadwick, the Wizened
Legendary Creature - Human Wizard
When Gadwick, the Wizened enters the battlefield, draw X cards.
Whenever you cast a blue spell, tap target nonland permanent an opponent controls.
3 /
3
{X}{X}{G}
Gelatinous Genesis
Sorcery
Create X X/X green Ooze creature tokens.
{X}{G}{G}{G}
Genesis Wave
Sorcery
Reveal the top X cards of your library. You may put any number of permanent cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield into your graveyard.
{X}{G}
Green Sun's Zenith
Sorcery
Search your library for a green creature card with mana value X or less, put it onto the battlefield, then shuffle. Shuffle Green Sun's Zenith into its owner's library.
--
Hall of Storm Giants
Land
If you control two or more other lands, Hall of Storm Giants enters the battlefield tapped.
{T}: Add {U}.
{5}{U}: Until end of turn, Hall of Storm Giants becomes a 7/7 blue Giant creature with ward {3}. It's still a land. (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.)
{2}{G}
Heartbeat of Spring
Enchantment
Whenever a player taps a land for mana, that player adds one mana of any type that land produced.
{X}{G}{G}
Hooded Hydra
Creature - Snake Hydra
Hooded Hydra enters the battlefield with X +1/+1 counters on it.
When Hooded Hydra dies, create a 1/1 green Snake creature token for each +1/+1 counter on it.
Morph {3}{G}{G}
As Hooded Hydra is turned face up, put five +1/+1 counters on it.
0 /
0
{X}{G}
Hungering Hydra
Creature - Hydra
Hungering Hydra enters the battlefield with X +1/+1 counters on it.
Hungering Hydra can't be blocked by more than one creature.
Whenever Hungering Hydra is dealt damage, put that many +1/+1 counters on it. (It must survive the damage to get the counters.)
0 /
0
{X}{G}
Hurricane
Sorcery
Hurricane deals X damage to each creature with flying and each player.
{X}{G}{U}
Hydroid Krasis
Creature - Jellyfish Hydra Beast
When you cast this spell, you gain half X life and draw half X cards. Round down each time.
Flying, trample
Hydroid Krasis enters the battlefield with X +1/+1 counters on it.
0 /
0
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{10}
Kozilek, Butcher of Truth
Legendary Creature - Eldrazi
When you cast this spell, draw four cards.
Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.)
When Kozilek, Butcher of Truth is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.
12 /
12
{8}{C}{C}
Kozilek, the Great Distortion
Legendary Creature - Eldrazi
When you cast this spell, if you have fewer than seven cards in hand, draw cards equal to the difference.
Menace
Discard a card with mana value X: Counter target spell with mana value X.
12 /
12
{3}{G}{U}
Kruphix, God of Horizons
Legendary Enchantment Creature - God
Indestructible
As long as your devotion to green and blue is less than seven, Kruphix isn't a creature.
You have no maximum hand size.
If you would lose unspent mana, that mana becomes colorless instead.
4 /
7
--
Lair of the Hydra
Land
If you control two or more other lands, Lair of the Hydra enters the battlefield tapped.
{T}: Add {G}.
{X}{G}: Until end of turn, Lair of the Hydra becomes an X/X green Hydra creature. It's still a land. X can't be 0.
{1}{G}
Lotus Cobra
Creature - Snake
Landfall -- Whenever a land you control enters, add one mana of any color.
2 /
1
{X}{G}
Mana Bloom
Enchantment
Mana Bloom enters the battlefield with X charge counters on it.
Remove a charge counter from Mana Bloom: Add one mana of any color. Activate only once each turn.
At the beginning of your upkeep, if Mana Bloom has no charge counters on it, return it to its owner's hand.
{U}{U}
Mana Drain
Instant
Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.
{1}
Mana Vault
Artifact
Mana Vault doesn't untap during your untap step.
At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault.
At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.
{T}: Add {C}{C}{C}.
--
Meteor Crater
Land
{T}: Choose a color of a permanent you control. Add one mana of that color.
{X}{U}{U}
Mind Spring
Sorcery
Draw X cards.
{X}{G}
Mistcutter Hydra
Creature - Hydra
This spell can't be countered.
Haste, protection from blue
Mistcutter Hydra enters the battlefield with X +1/+1 counters on it.
0 /
0
--
Misty Rainforest
Land
{T}, Pay 1 life, Sacrifice Misty Rainforest: Search your library for a Forest or Island card, put it onto the battlefield, then shuffle.
{X}{U}
Multiple Choice
Sorcery
If X is 1, scry 1, then draw a card.
If X is 2, you may choose a player. They return a creature they control to its owner's hand.
If X is 3, create a 4/4 blue and red Elemental creature token.
If X is 4 or more, do all of the above.
{1}{G}
Nature's Lore
Sorcery
Search your library for a Forest card, put that card onto the battlefield, then shuffle.
{X}{X}{G}{G}
Neverwinter Hydra
Creature - Hydra
As Neverwinter Hydra enters the battlefield, roll X d6. It enters with a number of +1/+1 counters on it equal to the total of those results.
Trample
Ward {4} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {4}.)
0 /
0
{4}{G}{G}{G}
Nyxbloom Ancient
Enchantment Creature - Elemental
Trample
If you tap a permanent for mana, it produces three times as much of that mana instead.
5 /
5
{X}{G}
Ochre Jelly
Creature - Ooze
Trample
Ochre Jelly enters the battlefield with X +1/+1 counters on it.
Split -- When Ochre Jelly dies, if it had two or more +1/+1 counters on it, create a token that's a copy of it at the beginning of the next end step. The token enters the battlefield with half that many +1/+1 counters on it, rounded down.
0 /
0
{0}
Pact of Negation
Instant
Counter target spell.
At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.
{5}{U}{U}
Palinchron
Creature - Illusion
Flying
When Palinchron enters the battlefield, untap up to seven lands.
{2}{U}{U}: Return Palinchron to its owner's hand.
4 /
5
{G}{G}{U}{U}
Plasm Capture
Instant
Counter target spell. At the beginning of your next precombat main phase, add X mana in any combination of colors, where X is that spell's mana value.
{X}{G}{G}
Primordial Hydra
Creature - Hydra
Primordial Hydra enters the battlefield with X +1/+1 counters on it.
At the beginning of your upkeep, double the number of +1/+1 counters on Primordial Hydra.
Primordial Hydra has trample as long as it has ten or more +1/+1 counters on it.
0 /
0
{X}{G}
Protean Hydra
Creature - Hydra
Protean Hydra enters the battlefield with X +1/+1 counters on it.
If damage would be dealt to Protean Hydra, prevent that damage and remove that many +1/+1 counters from it.
Whenever a +1/+1 counter is removed from Protean Hydra, put two +1/+1 counters on it at the beginning of the next end step.
0 /
0
{5}
Psychosis Crawler
Artifact Creature - Phyrexian Horror
Psychosis Crawler's power and toughness are each equal to the number of cards in your hand.
Whenever you draw a card, each opponent loses 1 life.
* /
*
{X}{U}{U}
Pull from Tomorrow
Instant
Draw X cards, then discard a card.
--
Rejuvenating Springs
Land
Rejuvenating Springs enters the battlefield tapped unless you have two or more opponents.
{T}: Add {G} or {U}.
{2}{U}{U}
Rewind
Instant
Counter target spell. Untap up to four lands.
{3}{G}{G}
Seedborn Muse
Creature - Spirit
Untap all permanents you control during each other player's untap step.
2 /
4
{2}
Simic Signet
Artifact
{1}, {T}: Add {G}{U}.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{X}{G}{G}
Steelbane Hydra
Creature - Turtle Hydra
Steelbane Hydra enters the battlefield with X +1/+1 counters on it.
{2}{G}, Remove a +1/+1 counter from Steelbane Hydra: Destroy target artifact or enchantment.
0 /
0
{X}
Stonecoil Serpent
Artifact Creature - Snake
Reach, trample, protection from multicolored
Stonecoil Serpent enters the battlefield with X +1/+1 counters on it.
0 /
0
{X}{2}{U}
Stroke of Genius
Instant
Target player draws X cards.
{2}
Talisman of Curiosity
Artifact
{T}: Add {C}.
{T}: Add {G} or {U}. Talisman of Curiosity deals 1 damage to you.
{4}
Thran Dynamo
Artifact
{T}: Add {C}{C}{C}.
{10}
Ulamog, the Ceaseless Hunger
Legendary Creature - Eldrazi
When you cast this spell, exile two target permanents.
Indestructible
Whenever Ulamog, the Ceaseless Hunger attacks, defending player exiles the top twenty cards of their library.
10 /
10
{11}
Ulamog, the Infinite Gyre
Legendary Creature - Eldrazi
When you cast this spell, destroy target permanent.
Indestructible
Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.)
When Ulamog, the Infinite Gyre is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.
10 /
10
{2}{U}
Unwind
Instant
Counter target noncreature spell. Untap up to three lands.
{X}{G}{G}
Voracious Hydra
Creature - Hydra
Trample
Voracious Hydra enters the battlefield with X +1/+1 counters on it.
When Voracious Hydra enters the battlefield, choose one --
• Double the number of +1/+1 counters on Voracious Hydra.
• Voracious Hydra fights target creature you don't control.
0 /
1
--
Waterlogged Grove
Land
{T}, Pay 1 life: Add {G} or {U}.
{1}, {T}, Sacrifice Waterlogged Grove: Draw a card.
{3}{G}
Wilderness Reclamation
Enchantment
At the beginning of your end step, untap all lands you control.
{X}{X}{G}
Wildest Dreams
Sorcery
Return X target cards from your graveyard to your hand. Exile Wildest Dreams.
--
Yavimaya Coast
Land
{T}: Add {C}.
{T}: Add {G} or {U}. Yavimaya Coast deals 1 damage to you.
{3}{U}
Aetherize
Instant
Return all attacking creatures to their owner's hand.
{3}{U}{U}
Aetherspouts
Instant
For each attacking creature, its owner puts it on the top or bottom of their library.
{3}{G}
Blunt the Assault
Instant
You gain 1 life for each creature on the battlefield. Prevent all combat damage that would be dealt this turn.
{X}{U}{U}
Curse of the Swine
Sorcery
Exile X target creatures. For each creature exiled this way, its controller creates a 2/2 green Boar creature token.
{G}
Fyndhorn Elves
Creature - Elf Druid
{T}: Add {G}.
1 /
1
{G}
Llanowar Elves
Creature - Elf Druid
{T}: Add {G}.
1 /
1
{G}{G}
Nostalgic Dreams
Sorcery
As an additional cost to cast this spell, discard X cards.
Return X target cards from your graveyard to your hand. Exile Nostalgic Dreams.
{1}{G}
Respite
Instant
Prevent all combat damage that would be dealt this turn. You gain 1 life for each attacking creature.
{3}{U}{U}
Spell Swindle
Instant
Counter target spell. Create X Treasure tokens, where X is that spell's mana value. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")
{X}{G}{G}
Squall Line
Instant
Squall Line deals X damage to each creature with flying and each player.
{1}{G}
Three Visits
Sorcery
Search your library for a Forest card, put it onto the battlefield, then shuffle.