Put a +1/+1 counter on target creature you control if it's legendary. Then it fights target creature an opponent controls. (Each deals damage equal to its power to the other.)
{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.
{4}{B}{G}
Back for More
Instant
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.)
{1}{G}
Barroom Brawl
Sorcery
Target creature you control fights target creature the opponent to your left controls. Then that player may copy this spell and may choose new targets for the copy.
{2}{G}
Beneath the Sands
Sorcery
Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
Cycling {2} ({2}, Discard this card: Draw a card.)
{2}{G}
Blex, Vexing Pest
Legendary Creature - Pest
Other Pests, Bats, Insects, Snakes, and Spiders you control get +1/+1.
When Blex, Vexing Pest dies, you gain 4 life.
3 /
2
--
Search for Blex
Sorcery
Look at the top five cards of your library. You may put any number of them into your hand and the rest into your graveyard. You lose 3 life for each card you put into your hand this way.
3 /
2
{2}
Blight Sickle
Artifact - Equipment
Equipped creature gets +1/+0 and has wither. (It deals damage to creatures in the form of -1/-1 counters.)
Equip {2}
--
Blighted Woodland
Land
{T}: Add {C}.
{3}{G}, {T}, Sacrifice Blighted Woodland: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.
{2}{B}
Blowfly Infestation
Enchantment
Whenever a creature dies, if it had a -1/-1 counter on it, put a -1/-1 counter on target creature.
{1}{G}
Boxing Ring
Artifact
Whenever a creature enters the battlefield under your control, it fights up to one target creature you don't control with the same mana value.
{T}: Create a Treasure token. Activate only if you control a creature that fought this turn.
{1}{G}
Broken Bond
Sorcery
Destroy target artifact or enchantment. You may put a land card from your hand onto the battlefield.
{G}
Bushwhack
Sorcery
Choose one --
• Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
• Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)
{2}{G}
Carnivorous Canopy
Sorcery
Destroy target artifact, enchantment, or creature with flying. If that permanent's mana value was 3 or less, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
{2}{B}
Cinderbones
Creature - Elemental Skeleton
Wither (This deals damage to creatures in the form of -1/-1 counters.)
{1}{B}: Regenerate Cinderbones.
1 /
1
{4}{G}{G}
Cobra Trap
Instant - Trap
If a noncreature permanent under your control was destroyed this turn by a spell or ability an opponent controlled, you may pay {G} rather than pay this spell's mana cost.
Create four 1/1 green Snake creature tokens.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{2}
Contagion Clasp
Artifact
When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature.
{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
{6}
Contagion Engine
Artifact
When Contagion Engine enters the battlefield, put a -1/-1 counter on each creature target player controls.
{4}, {T}: Proliferate, then proliferate again. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)
--
Deathcap Glade
Land
Deathcap Glade enters the battlefield tapped unless you control two or more other lands.
{T}: Add {B} or {G}.
--
Desert of the Glorified
Land - Desert
Desert of the Glorified enters the battlefield tapped.
{T}: Add {B}.
Cycling {1}{B} ({1}{B}, Discard this card: Draw a card.)
--
Desert of the Indomitable
Land - Desert
Desert of the Indomitable enters the battlefield tapped.
{T}: Add {G}.
Cycling {1}{G} ({1}{G}, Discard this card: Draw a card.)
{2}{G}
Evolution Sage
Creature - Elf Druid
Landfall -- Whenever a land enters the battlefield under your control, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
3 /
2
--
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}.)
--
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}.)
{2}{G}
Generous Patron
Creature - Elf Advisor
When Generous Patron enters the battlefield, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)
Whenever you put one or more counters on a creature you don't control, draw a card.
1 /
4
{2}{B}
Grim Affliction
Instant
Put a -1/-1 counter on target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
{B}{G}
Hapatra, Vizier of Poisons
Legendary Creature - Human Cleric
Whenever Hapatra, Vizier of Poisons deals combat damage to a player, you may put a -1/-1 counter on target creature.
Whenever you put one or more -1/-1 counters on a creature, create a 1/1 green Snake creature token with deathtouch.
2 /
2
{2}{B}
Hooded Blightfang
Creature - Snake
Deathtouch
Whenever a creature you control with deathtouch attacks, each opponent loses 1 life and you gain 1 life.
Whenever a creature you control with deathtouch deals damage to a planeswalker, destroy that planeswalker.
1 /
4
{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
{3}{G}
Into the Wilds
Enchantment
At the beginning of your upkeep, look at the top card of your library. If it's a land card, you may put it onto the battlefield.
{1}{B}{G}
Journey to Eternity
Legendary Enchantment - Aura
Enchant creature you control
When enchanted creature dies, return it to the battlefield under your control, then return Journey to Eternity to the battlefield transformed under your control.
--
Atzal, Cave of Eternity
Legendary Land
(Transforms from Journey to Eternity.)
{T}: Add one mana of any color.
{3}{B}{G}, {T}: Return target creature card from your graveyard to the battlefield.
{G}{G}
Juvenile Gloomwidow
Creature - Spider
Reach (This creature can block creatures with flying.)
Wither (This deals damage to creatures in the form of -1/-1 counters.)
1 /
3
--
Karn's Bastion
Land
{T}: Add {C}.
{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
{2}{G}
Khalni Ambush
Instant
Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)
--
Khalni Territory
Land
Khalni Territory enters the battlefield tapped.
{T}: Add {G}.
{4}
Lockjaw Snapper
Artifact Creature - Scarecrow
Wither (This deals damage to creatures in the form of -1/-1 counters.)
When Lockjaw Snapper dies, put a -1/-1 counter on each creature with a -1/-1 counter on it.
2 /
2
{1}{G}
Lotus Cobra
Creature - Snake
Landfall -- Whenever a land enters the battlefield under your control, add one mana of any color.
2 /
1
{1}{G}
Matsu-Tribe Sniper
Creature - Snake Warrior Archer
{T}: Matsu-Tribe Sniper deals 1 damage to target creature with flying.
Whenever Matsu-Tribe Sniper deals damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.
1 /
1
{3}{B}{B}{B}
Midnight Banshee
Creature - Spirit
Wither (This deals damage to creatures in the form of -1/-1 counters.)
At the beginning of your upkeep, put a -1/-1 counter on each nonblack creature.
5 /
5
{3}{G}
Migration Path
Sorcery
Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.
Cycling {2} ({2}, Discard this card: Draw a card.)
--
Myriad Landscape
Land
Myriad Landscape enters the battlefield tapped.
{T}: Add {C}.
{2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.
{1}{B}{B}
Necroskitter
Creature - Elemental
Wither (This deals damage to creatures in the form of -1/-1 counters.)
Whenever a creature an opponent controls with a -1/-1 counter on it dies, you may return that card to the battlefield under your control.
1 /
4
{1}{B}{B}
Needle Specter
Creature - Specter
Flying
Wither (This deals damage to creatures in the form of -1/-1 counters.)
Whenever Needle Specter deals combat damage to a player, that player discards that many cards.
1 /
1
{3}{B/G}
Noxious Hatchling
Creature - Elemental
Noxious Hatchling enters the battlefield with four -1/-1 counters on it.
Wither (This deals damage to creatures in the form of -1/-1 counters.)
Whenever you cast a black spell, remove a -1/-1 counter from Noxious Hatchling.
Whenever you cast a green spell, remove a -1/-1 counter from Noxious Hatchling.
6 /
6
{1}{B}{G}
Obelisk Spider
Creature - Spider
Reach
Whenever Obelisk Spider deals combat damage to a creature, put a -1/-1 counter on that creature.
Whenever you put one or more -1/-1 counters on a creature, each opponent loses 1 life and you gain 1 life.
1 /
4
{3}{G}{G}
Ohran Frostfang
Snow Creature - Snake
Attacking creatures you control have deathtouch.
Whenever a creature you control deals combat damage to a player, draw a card.
2 /
6
--
Oran-Rief, the Vastwood
Land
Oran-Rief, the Vastwood enters the battlefield tapped.
{T}: Add {G}.
{T}: Put a +1/+1 counter on each green creature that entered the battlefield this turn.
{1}{G}
Orochi Sustainer
Creature - Snake Shaman
{T}: Add {G}.
1 /
2
--
Overgrown Tomb
Land - Swamp Forest
({T}: Add {B} or {G}.)
As Overgrown Tomb enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{1}{B}{G}
Pharika, God of Affliction
Legendary Enchantment Creature - God
Indestructible
As long as your devotion to black and green is less than seven, Pharika isn't a creature.
{B}{G}: Exile target creature card from a graveyard. Its owner creates a 1/1 black and green Snake enchantment creature token with deathtouch.
5 /
5
{1}{G}
Pounce
Instant
Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)
{G}
Prey Upon
Sorcery
Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)
--
Reliquary Tower
Land
You have no maximum hand size.
{T}: Add {C}.
{2}{B/G}
Rendclaw Trow
Creature - Troll
Wither (This deals damage to creatures in the form of -1/-1 counters.)
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)
2 /
2
{2}{G}{G}
Sachi, Daughter of Seshiro
Legendary Creature - Snake Shaman
Other Snake creatures you control get +0/+1.
Shamans you control have "{T}: Add {G}{G}."
1 /
3
{1}{G}
Sakura-Tribe Elder
Creature - Snake Shaman
Sacrifice Sakura-Tribe Elder: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
1 /
1
{G}
Sakura-Tribe Scout
Creature - Snake Shaman Scout
{T}: You may put a land card from your hand onto the battlefield.
1 /
1
{3}{G}
Sakura-Tribe Springcaller
Creature - Snake Shaman
At the beginning of your upkeep, add {G}. Until end of turn, you don't lose this mana as steps and phases end.
2 /
4
{1}{G}
Savage Punch
Sorcery
Target creature you control fights target creature you don't control.
Ferocious -- The creature you control gets +2/+2 until end of turn before it fights if you control a creature with power 4 or greater.
{4}{G}{G}
Seshiro the Anointed
Legendary Creature - Snake Monk
Other Snake creatures you control get +2/+2.
Whenever a Snake you control deals combat damage to a player, you may draw a card.
3 /
4
{1}{G}
Setessan Tactics
Instant
Strive -- This spell costs {G} more to cast for each target beyond the first.
Until end of turn, any number of target creatures each get +1/+1 and gain "{T}: This creature fights another target creature."
{1}{B}
Sickle Ripper
Creature - Elemental Warrior
Wither (This deals damage to creatures in the form of -1/-1 counters.)
2 /
1
{3}{B}
Sivriss, Nightmare Speaker
Legendary Creature - Snake Cleric Warlock
{T}, Sacrifice another creature or an artifact: For each opponent, you mill a card, then return that card from your graveyard to your hand unless that player pays 3 life. (To mill a card, put the top card of your library into your graveyard.)
Choose a Background (You can have a Background as a second commander.)
3 /
3
{2}{G}
Skullwinder
Creature - Snake
Deathtouch
When Skullwinder enters the battlefield, return target card from your graveyard to your hand, then choose an opponent. That player returns a card from their graveyard to their hand.
1 /
3
{1}{G}
Smell Fear
Sorcery
Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Target creature you control fights up to one target creature you don't control.
{3}{B}
Smoldering Butcher
Creature - Elemental Warrior
Wither (This deals damage to creatures in the form of -1/-1 counters.)
4 /
2
{3}{G}
Snake Pit
Enchantment
Whenever an opponent casts a blue or black spell, you may create a 1/1 green Snake creature token.
{2}{G}
Snake Umbra
Enchantment - Aura
Enchant creature
Enchanted creature gets +1/+1 and has "Whenever this creature deals damage to an opponent, you may draw a card."
Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)
{G}
Snakeskin Veil
Instant
Put a +1/+1 counter on target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)
{2}{G}{G}
Sosuke, Son of Seshiro
Legendary Creature - Snake Warrior
Other Snake creatures you control get +1/+0.
Whenever a Warrior you control deals combat damage to a creature, destroy that creature at end of combat.
3 /
4
{2}{B}{B}
Soul Snuffers
Creature - Elemental Shaman
When Soul Snuffers enters the battlefield, put a -1/-1 counter on each creature.
3 /
3
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
{G}
Tail Swipe
Instant
Choose target creature you control and target creature you don't control. If you cast this spell during your main phase, the creature you control gets +1/+1 until end of turn. Then those creatures fight each other. (Each deals damage equal to its power to the other.)
--
Temple of Malady
Land
Temple of Malady enters the battlefield tapped.
When Temple of Malady enters the battlefield, scry 1.
{T}: Add {B} or {G}.
{2}
Thought Vessel
Artifact
You have no maximum hand size.
{T}: Add {C}.
{2/G}{2/G}{2/G}
Tower Above
Sorcery
({2/G} can be paid with any two mana or with {G}. This card's mana value is 6.)
Until end of turn, target creature gets +4/+4 and gains trample, wither, and "When this creature attacks, target creature blocks it this turn if able." (It deals damage to creatures in the form of -1/-1 counters.)
{G}
Twinblade Slasher
Creature - Elf Warrior
Wither (This deals damage to creatures in the form of -1/-1 counters.)
{1}{G}: Twinblade Slasher gets +2/+2 until end of turn. Activate only once each turn.
1 /
1
{1}{G}
Unnatural Restoration
Sorcery
Return target permanent card from your graveyard to your hand. Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
{3}{G}
Wildslayer Elves
Creature - Elf Warrior
Wither (This deals damage to creatures in the form of -1/-1 counters.)
3 /
3
{4}{G}{G}
Witherscale Wurm
Creature - Wurm
Whenever Witherscale Wurm blocks or becomes blocked by a creature, that creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.)
Whenever Witherscale Wurm deals damage to an opponent, remove all -1/-1 counters from it.
9 /
9
{2}{B}{B}
Yawgmoth, Thran Physician
Legendary Creature - Human Cleric
Protection from Humans
Pay 1 life, Sacrifice another creature: Put a -1/-1 counter on up to one target creature and draw a card.
{B}{B}, Discard a card: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)