As long as it's your turn, commanders you control have indestructible. (Effects that say "destroy" don't destroy them. A creature with indestructible can't be destroyed by damage.)
Partner (You can have two commanders if both have partner.)
4 /
4
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{5}{U}{U}
Archipelagore
Creature - Leviathan
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.
7 /
7
{4}{G}
Auspicious Starrix
Creature - Elk Beast
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.
6 /
6
--
Barkchannel Pathway
Land
{T}: Add {G}.
--
Tidechannel Pathway
Land
{T}: Add {U}.
{G}{G}
Bassara Tower Archer
Creature - Human Archer
Hexproof, reach
2 /
1
{2}{B}{G}
Boneyard Lurker
Creature - Nightmare Beast
Mutate {2}{B/G}{B/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, return target permanent card from your graveyard to your hand.
4 /
4
{2}{B}{G}{U}
Brokkos, Apex of Forever
Legendary Creature - Nightmare Beast Elemental
Mutate {2}{U/B}{G}{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.)
Trample
You may cast Brokkos, Apex of Forever from your graveyard using its mutate ability.
6 /
6
{4}{B}
Cavern Whisperer
Creature - Nightmare
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.
4 /
4
{5}{B}
Chittering Harvester
Creature - Nightmare
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.
4 /
6
--
Clearwater Pathway
Land
{T}: Add {U}.
--
Murkwater Pathway
Land
{T}: Add {B}.
{1}{G/U}{G/U}
Cold-Eyed Selkie
Creature - Merfolk Rogue
Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
Whenever Cold-Eyed Selkie deals combat damage to a player, you may draw that many cards.
1 /
1
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{4}
Cosmos Elixir
Artifact
At the beginning of your end step, draw a card if your life total is greater than your starting life total. Otherwise, you gain 2 life.
{1}{U}
Cyclonic Rift
Instant
Return target nonland permanent you don't control to its owner's hand.
Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
--
Darkbore Pathway
Land
{T}: Add {B}.
--
Slitherbore Pathway
Land
{T}: Add {G}.
{3}{B}
Deadly Rollick
Instant
If you control a commander, you may cast this spell without paying its mana cost.
Exile target creature.
{3}{B}{B}
Demon of Wailing Agonies
Creature - Demon
Flying
Lieutenant -- As long as you control your commander, Demon of Wailing Agonies gets +2/+2 and has "Whenever Demon of Wailing Agonies deals combat damage to a player, that player sacrifices a creature."
4 /
4
{2}{B}{B}
Dirge Bat
Creature - Bat
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.
3 /
3
{4}{U}
Dreamtail Heron
Creature - Elemental Bird
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.
3 /
4
--
Drowned Catacomb
Land
Drowned Catacomb enters the battlefield tapped unless you control an Island or a Swamp.
{T}: Add {U} or {B}.
{1}{U}
Esior, Wardwing Familiar
Legendary Creature - Bird
Flying
Spells your opponents cast that target one or more commanders you control cost {3} more to cast.
Partner (You can have two commanders if both have partner.)
1 /
3
{2}{B}
Falthis, Shadowcat Familiar
Legendary Creature - Nightmare Cat
Commanders you control have menace and deathtouch.
Partner (You can have two commanders if both have partner.)
2 /
2
--
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}.)
{3}{G}
Gemrazer
Creature - Beast
Mutate {1}{G}{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, trample
Whenever this creature mutates, destroy target artifact or enchantment an opponent controls.
4 /
4
{G}
Gladecover Scout
Creature - Elf Scout
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
1 /
1
{2}{G}
Glowstone Recluse
Creature - Spider
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.
2 /
3
{B}{G}
Golgari Charm
Instant
Choose one --
• All creatures get -1/-1 until end of turn.
• Destroy target enchantment.
• Regenerate each creature you control.
{2}{G}
Guardian Augmenter
Creature - Troll Wizard
Flash
Commander creatures you control get +2/+2.
Commanders you control have hexproof.
2 /
2
--
Hinterland Harbor
Land
Hinterland Harbor enters the battlefield tapped unless you control a Forest or an Island.
{T}: Add {G} or {U}.
{3}{B}
Insatiable Hemophage
Creature - Nightmare
Mutate {2}{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.)
Deathtouch
Whenever this creature mutates, each opponent loses X life and you gain X life, where X is the number of times this creature has mutated.
3 /
3
{1}{G}
Into the North
Sorcery
Search your library for a snow land card, put it onto the battlefield tapped, then shuffle.
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{2}{G}{U}
Kiora, the Crashing Wave
Legendary Planeswalker - Kiora
+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."
L:
2
{3}{G}{G}{U}{U}
Koma, Cosmos Serpent
Legendary Creature - Serpent
This spell can't be countered.
At the beginning of each upkeep, create a 3/3 blue Serpent creature token named Koma's Coil.
Sacrifice another Serpent: Choose one --
• Tap target permanent. Its activated abilities can't be activated this turn.
• Koma, Cosmos Serpent gains indestructible until end of turn.
6 /
6
--
Llanowar Wastes
Land
{T}: Add {C}.
{T}: Add {B} or {G}. Llanowar Wastes deals 1 damage to you.
{2}{U}
Loyal Drake
Creature - Drake
Flying
Lieutenant -- At the beginning of combat on your turn, if you control your commander, draw a card.
2 /
2
{4}{G}
Loyal Guardian
Creature - Rhino
Trample
Lieutenant -- At the beginning of combat on your turn, if you control your commander, put a +1/+1 counter on each creature you control.
4 /
4
{2}{B}
Loyal Subordinate
Creature - Zombie
Menace
Lieutenant -- At the beginning of combat on your turn, if you control your commander, each opponent loses 3 life.
3 /
1
{3}{G}
Migratory Greathorn
Creature - Beast
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.
3 /
4
{4}{B}{B}
Mindleecher
Creature - Nightmare
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.)
Flying
Whenever this creature mutates, exile the top card of each opponent's library face down. You may look at and play those cards for as long as they remain exiled.
5 /
5
{1}{G}
Nature's Lore
Sorcery
Search your library for a Forest card, put that card onto the battlefield, then shuffle.
{1}{G}{U}
Oko, Thief of Crowns
Legendary Planeswalker - Oko
+2: Create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")
+1: Target artifact or creature loses all abilities and becomes a green Elk creature with base power and toughness 3/3.
-5: Exchange control of target artifact or creature you control and target creature an opponent controls with power 3 or less.
L:
4
--
Opulent Palace
Land
Opulent Palace enters the battlefield tapped.
{T}: Add {B}, {G}, or {U}.
{3}{B}{G}{U}
Otrimi, the Ever-Playful
Legendary Creature - Nightmare Beast
Mutate {1}{B}{G}{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.)
Trample
Whenever this creature deals combat damage to a player, return target creature card with mutate from your graveyard to your hand.
6 /
6
{2}{G}{U}
Parcelbeast
Creature - Elemental Beast
Mutate {G}{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.)
{1}, {T}: Look at the top card of your library. If it's a land card, you may put it onto the battlefield. If you don't put the card onto the battlefield, put it into your hand.
2 /
4
{4}{U}
Pouncing Shoreshark
Creature - Shark Beast
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.
4 /
3
{G}{G}{G}
Predator Ooze
Creature - Ooze
Indestructible
Whenever Predator Ooze attacks, put a +1/+1 counter on it.
Whenever a creature dealt damage by Predator Ooze this turn dies, put a +1/+1 counter on Predator Ooze.
1 /
1
{1}{G}{U}
Primal Empathy
Enchantment
At the beginning of your upkeep, draw a card if you control a creature with the greatest power among creatures on the battlefield. Otherwise, put a +1/+1 counter on a creature you control.
{1}{G}{U}
Quandrix Command
Instant
Choose two --
• Return target creature or planeswalker to its owner's hand.
• Counter target artifact or enchantment spell.
• Put two +1/+1 counters on target creature.
• Target player shuffles up to three target cards from their graveyard into their library.
{1}{G}
Rampant Growth
Sorcery
Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
{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
{3}{B/G}{B/G}
Sapling of Colfenor
Legendary Creature - Treefolk Shaman
Indestructible
Whenever Sapling of Colfenor attacks, reveal the top card of your library. If it's a creature card, you gain life equal to that card's toughness, lose life equal to its power, then put it into your hand.
2 /
5
{4}{G}{G}
Sawtusk Demolisher
Creature - Beast
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.)
Trample
Whenever this creature mutates, destroy target noncreature permanent. Its controller creates a 3/3 green Beast creature token.
6 /
6
{1}{U}{U}
Sea-Dasher Octopus
Creature - Octopus
Mutate {1}{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 deals combat damage to a player, draw a card.
2 /
2
{1}{G}
Silhana Ledgewalker
Creature - Elf Rogue
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
Silhana Ledgewalker can't be blocked except by creatures with flying.
1 /
1
{3}{U}{B}
Silumgar's Command
Instant
Choose two --
• Counter target noncreature spell.
• Return target permanent to its owner's hand.
• Target creature gets -3/-3 until end of turn.
• Destroy target planeswalker.
{G}{U}
Simic Charm
Instant
Choose one --
• Target creature gets +3/+3 until end of turn.
• Permanents you control gain hexproof until end of turn.
• Return target creature to its owner's hand.
{G/U}
Slippery Bogle
Creature - Beast
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
1 /
1
--
Snow-Covered Forest
Basic Snow Land - Forest
({T}: Add {G}.)
--
Snow-Covered Forest
Basic Snow Land - Forest
({T}: Add {G}.)
--
Snow-Covered Forest
Basic Snow Land - Forest
({T}: Add {G}.)
--
Snow-Covered Forest
Basic Snow Land - Forest
({T}: Add {G}.)
--
Snow-Covered Forest
Basic Snow Land - Forest
({T}: Add {G}.)
--
Snow-Covered Forest
Basic Snow Land - Forest
({T}: Add {G}.)
--
Snow-Covered Island
Basic Snow Land - Island
({T}: Add {U}.)
--
Snow-Covered Island
Basic Snow Land - Island
({T}: Add {U}.)
--
Snow-Covered Swamp
Basic Snow Land - Swamp
({T}: Add {B}.)
--
Snow-Covered Swamp
Basic Snow Land - Swamp
({T}: Add {B}.)
{4}{U}
Souvenir Snatcher
Creature - Bird
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.)
Flying
Whenever this creature mutates, gain control of target noncreature artifact.
4 /
4
{3}{U}{U}
Stormsurge Kraken
Creature - Kraken
Hexproof
Lieutenant -- As long as you control your commander, Stormsurge Kraken gets +2/+2 and has "Whenever Stormsurge Kraken becomes blocked, you may draw two cards."
5 /
5
{B}{G}{U}
Sultai Charm
Instant
Choose one --
• Destroy target monocolored creature.
• Destroy target artifact or enchantment.
• Draw two cards, then discard a card.
--
Sunken Ruins
Land
{T}: Add {C}.
{U/B}, {T}: Add {U}{U}, {U}{B}, or {B}{B}.
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
{2}
Swiftfoot Boots
Artifact - Equipment
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)
Equip {1}
{2}
Talisman of Curiosity
Artifact
{T}: Add {C}.
{T}: Add {G} or {U}. Talisman of Curiosity deals 1 damage to you.
{2}
Talisman of Dominance
Artifact
{T}: Add {C}.
{T}: Add {U} or {B}. Talisman of Dominance deals 1 damage to you.
{2}
Talisman of Resilience
Artifact
{T}: Add {C}.
{T}: Add {B} or {G}. Talisman of Resilience deals 1 damage to you.
{1}{G}
Three Visits
Sorcery
Search your library for a Forest card, put it onto the battlefield, then shuffle.
{2}{G}{G}
Thrun, the Last Troll
Legendary Creature - Troll Shaman
This spell can't be countered.
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
{1}{G}: Regenerate Thrun, the Last Troll.
4 /
4
{4}{G}{G}
Thunderfoot Baloth
Creature - Beast
Trample
Lieutenant -- As long as you control your commander, Thunderfoot Baloth gets +2/+2 and other creatures you control get +2/+2 and have trample.
5 /
5
{2}
Tome of Legends
Artifact
Tome of Legends enters the battlefield with a page counter on it.
Whenever your commander enters the battlefield or attacks, put a page counter on Tome of Legends.
{1}, {T}, Remove a page counter from Tome of Legends: Draw a card.
{3}{G}
Toski, Bearer of Secrets
Legendary Creature - Squirrel
This spell can't be countered.
Indestructible
Toski, Bearer of Secrets attacks each combat if able.
Whenever a creature you control deals combat damage to a player, draw a card.
1 /
1
{1}{G}{G}
Troll Ascetic
Creature - Troll Shaman
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
{1}{G}: Regenerate Troll Ascetic.
3 /
2
{1}{G}{U}
Trumpeting Gnarr
Creature - Beast
Mutate {3}{G/U}{G/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, create a 3/3 green Beast creature token.
3 /
3
--
Twilight Mire
Land
{T}: Add {C}.
{B/G}, {T}: Add {B}{B}, {B}{G}, or {G}{G}.
--
Underground River
Land
{T}: Add {C}.
{T}: Add {U} or {B}. Underground River deals 1 damage to you.
{1}{G}
Urborg Elf
Creature - Elf Druid
{T}: Add {B}, {G}, or {U}.
1 /
1
--
Woodland Cemetery
Land
Woodland Cemetery enters the battlefield tapped unless you control a Swamp or a Forest.
{T}: Add {B} or {G}.
--
Yavimaya Coast
Land
{T}: Add {C}.
{T}: Add {G} or {U}. Yavimaya Coast deals 1 damage to you.
--
Zagoth Triome
Land - Swamp Forest Island
({T}: Add {B}, {G}, or {U}.)
Zagoth Triome enters the battlefield tapped.
Cycling {3} ({3}, Discard this card: Draw a card.)
{U}{B}
Baleful Strix
Artifact Creature - Bird
Flying, deathtouch
When Baleful Strix enters the battlefield, draw a card.
1 /
1
{1}{U}{U}
Capsize
Instant
Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)
Return target permanent to its owner's hand.
{1}{U}{B}
Consult the Necrosages
Sorcery
Choose one --
• Target player draws two cards.
• Target player discards two cards.
{U}{B}
Drown in the Loch
Instant
Choose one --
• Counter target spell with mana value less than or equal to the number of cards in its controller's graveyard.
• Destroy target creature with mana value less than or equal to the number of cards in its controller's graveyard.
{1}{U}{ // }{2}{B}
Far // Away
Instant // Instant
Return target creature to its owner's hand.
Fuse (You may cast one or both halves of this card from your hand.)
Target player sacrifices a creature.
Fuse (You may cast one or both halves of this card from your hand.)
{2}{U}
Fierce Guardianship
Instant
If you control a commander, you may cast this spell without paying its mana cost.
Counter target noncreature spell.
{G}{U}
Growth Spiral
Instant
Draw a card. You may put a land card from your hand onto the battlefield.
{1}{G}
Heroic Intervention
Instant
Permanents you control gain hexproof and indestructible until end of turn.
{2}{U}
Leadership Vacuum
Instant
Target player returns each commander they control from the battlefield to the command zone.
Draw a card.
{U}{B}
Mask of Riddles
Artifact - Equipment
Equipped creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.)
Whenever equipped creature deals combat damage to a player, you may draw a card.
Equip {2}
{1}{U}{B}
Pilfered Plans
Sorcery
Target player mills two cards. Draw two cards.
{U}{B}
Tidehollow Strix
Artifact Creature - Bird
Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
2 /
1
{1}{U}
Twisted Reflection
Instant
Choose one --
• Target creature gets -6/-0 until end of turn.
• Switch target creature's power and toughness until end of turn.
Entwine {B} (Choose both if you pay the entwine cost.)
{U}{B}
Tyrant's Scorn
Instant
Choose one --
• Destroy target creature with mana value 3 or less.
• Return target creature to its owner's hand.
{3}{G}{G}
Vivien, Monsters' Advocate
Legendary Planeswalker - Vivien
You may look at the top card of your library any time.
You may cast creature spells from the top of your library.
+1: Create a 3/3 green Beast creature token. Put your choice of a vigilance counter, a reach counter, or a trample counter on it.
-2: When you cast your next creature spell this turn, search your library for a creature card with lesser mana value, put it onto the battlefield, then shuffle.
L:
3
{2}{B}{G}{U}
Volrath, the Shapestealer
Legendary Creature - Phyrexian Shapeshifter
At the beginning of combat on your turn, put a -1/-1 counter on up to one target creature.
{1}: Until your next turn, Volrath, the Shapestealer becomes a copy of target creature with a counter on it, except it's 7/5 and it has this ability.