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
{5}{G}{G}
Ancient Bronze Dragon
Creature - Elder Dragon
Flying
Whenever Ancient Bronze Dragon deals combat damage to a player, roll a d20. When you do, put X +1/+1 counters on each of up to two target creatures, where X is the result.
7 /
7
{4}{R}{R}
Ancient Copper Dragon
Creature - Elder Dragon
Flying
Whenever Ancient Copper Dragon deals combat damage to a player, roll a d20. You create a number of Treasure tokens equal to the result.
6 /
5
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{3}
Atarka Monument
Artifact
{T}: Add {R} or {G}.
{4}{R}{G}: Atarka Monument becomes a 4/4 red and green Dragon artifact creature with flying until end of turn.
{5}{R}{G}
Atarka, World Render
Legendary Creature - Dragon
Flying, trample
Whenever a Dragon you control attacks, it gains double strike until end of turn.
6 /
4
{1}{G}
Bag of Tricks
Artifact
{4}{G}, {T}: Roll a d8. Reveal cards from the top of your library until you reveal a creature card with mana value equal to the result. Put that card onto the battlefield and the rest on the bottom of your library in a random order.
{R}
Barbarian Class
Enchantment - Class
(Gain the next level as a sorcery to add its ability.)
If you would roll one or more dice, instead roll that many dice plus one and ignore the lowest roll.
{1}{R}: Level 2
Whenever you roll one or more dice, target creature you control gets +2/+0 and gains menace until end of turn.
{2}{R}: Level 3
Creatures you control have haste.
{2}{G}
Beast Within
Instant
Destroy target permanent. Its controller creates a 3/3 green Beast creature token.
{6}{R}{R}
Bogardan Hellkite
Creature - Dragon
Flash
Flying
When Bogardan Hellkite enters the battlefield, it deals 5 damage divided as you choose among any number of targets.
5 /
5
--
Boseiju, Who Endures
Legendary Land
{T}: Add {G}.
Channel -- {1}{G}, Discard Boseiju, Who Endures: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.
{1}{R}
Brazen Dwarf
Creature - Dwarf Shaman
Whenever you roll one or more dice, Brazen Dwarf deals 1 damage to each opponent.
1 /
3
{2}
Bucknard's Everfull Purse
Artifact
{1}, {T}: Roll a d4 and create a number of Treasure tokens equal to the result. The player to your right gains control of Bucknard's Everfull Purse.
{2}{R}{R}
Chaos Channeler
Creature - Human Shaman
Wild Magic Surge -- Whenever Chaos Channeler attacks, roll a d20.
1--9 | Exile the top card of your library. You may play it this turn.
10--19 | Exile the top two cards of your library. You may play them this turn.
20 | Exile the top three cards of your library. You may play them this turn.
4 /
3
{1}{R}{R}
Chaos Dragon
Creature - Dragon
Flying, haste
Chaos Dragon attacks each combat if able.
At the beginning of combat on your turn, each player rolls a d20. If one or more opponents had the highest result, Chaos Dragon can't attack those players or planeswalkers they control this combat.
4 /
4
{2}{R}
Chaos Warp
Instant
The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.
--
Cinder Glade
Land - Mountain Forest
({T}: Add {R} or {G}.)
Cinder Glade enters the battlefield tapped unless you control two or more basic lands.
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{3}
Component Pouch
Artifact
{T}, Remove a component counter from Component Pouch: Add two mana of different colors.
{T}: Roll a d20.
1--9 | Put a component counter on Component Pouch.
10--20 | Put two component counters on Component Pouch.
{2}{G}
Cultivate
Sorcery
Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.
{3}
Darksteel Plate
Artifact - Equipment
Indestructible
Equipped creature has indestructible.
Equip {2}
{7}{G}{G}
Decree of Savagery
Instant
Put four +1/+1 counters on each creature you control.
Cycling {4}{G}{G} ({4}{G}{G}, Discard this card: Draw a card.)
When you cycle Decree of Savagery, you may put four +1/+1 counters on target creature.
{3}{R}
Delina, Wild Mage
Legendary Creature - Elf Shaman
Whenever Delina, Wild Mage attacks, choose target creature you control, then roll a d20.
1--14 | Create a tapped and attacking token that's a copy of that creature, except it's not legendary and it has "At end of combat, exile this creature."
15--20 | Create one of those tokens. You may roll again.
3 /
2
{1}{R}{G}
Domri, Anarch of Bolas
Legendary Planeswalker - Domri
Creatures you control get +1/+0.
+1: Add {R} or {G}. Creature spells you cast this turn can't be countered.
-2: Target creature you control fights target creature you don't control.
L:
3
{2}{R}{G}
Dragonborn Champion
Creature - Dragon Warrior
Trample
Whenever a source you control deals 5 or more damage to a player, draw a card.
5 /
3
{4}{R}{R}{R}
Drakuseth, Maw of Flames
Legendary Creature - Dragon
Flying
Whenever Drakuseth, Maw of Flames attacks, it deals 4 damage to any target and 3 damage to each of up to two other targets.
7 /
7
{3}{G}
Druid of Purification
Creature - Human Druid
When Druid of Purification enters the battlefield, starting with you, each player may choose an artifact or enchantment you don't control. Destroy each permanent chosen this way.
2 /
3
{3}{G}
Drumhunter
Creature - Human Druid Warrior
At the beginning of your end step, if you control a creature with power 5 or greater, you may draw a card.
{T}: Add {C}.
2 /
2
{4}{R}{R}
Earth-Cult Elemental
Creature - Elemental
Siege Monster -- When Earth-Cult Elemental enters the battlefield, roll a d20.
1--9 | Each player sacrifices a permanent.
10--19 | Each opponent sacrifices a permanent.
20 | Each opponent sacrifices two permanents.
6 /
6
{2}
Ebony Fly
Artifact
Ebony Fly enters the battlefield tapped.
{T}: Add {C}.
{4}: Roll a d6. Until end of turn, you may have Ebony Fly become an X/X Insect artifact creature with flying, where X is the result.
Whenever Ebony Fly attacks, another target attacking creature gains flying until end of turn.
{1}{G}{G}
Eternal Witness
Creature - Human Shaman
When Eternal Witness enters the battlefield, you may return target card from your graveyard to your hand.
2 /
1
{3}{R}{R}
Farideh's Fireball
Instant
Farideh's Fireball deals 5 damage to target creature or planeswalker. Roll a d20.
1--9 | Farideh's Fireball deals 2 damage to each player.
10--20 | Farideh's Fireball deals 2 damage to each opponent.
--
Fire-Lit Thicket
Land
{T}: Add {C}.
{R/G}, {T}: Add {R}{R}, {R}{G}, or {G}{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}.)
--
Game Trail
Land
As Game Trail enters the battlefield, you may reveal a Mountain or Forest card from your hand. If you don't, Game Trail enters the battlefield tapped.
{T}: Add {R} or {G}.
{2}{G}
Garruk's Uprising
Enchantment
When Garruk's Uprising enters the battlefield, if you control a creature with power 4 or greater, draw a card.
Creatures you control have trample. (They can deal excess combat damage to the player or planeswalker they're attacking.)
Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card.
{R}{G}
Goblin Anarchomancer
Creature - Goblin Shaman
Each spell you cast that's red or green costs {1} less to cast.
2 /
2
--
Great Furnace
Artifact Land
{T}: Add {R}.
--
Gruul Guildgate
Land - Gate
Gruul Guildgate enters the battlefield tapped.
{T}: Add {R} or {G}.
{2}
Gruul Signet
Artifact
{1}, {T}: Add {R}{G}.
--
Gruul Turf
Land
Gruul Turf enters the battlefield tapped.
When Gruul Turf enters the battlefield, return a land you control to its owner's hand.
{T}: Add {R}{G}.
{3}{R}{G}
Harbinger of the Hunt
Creature - Dragon
Flying
{2}{R}: Harbinger of the Hunt deals 1 damage to each creature without flying.
{2}{G}: Harbinger of the Hunt deals 1 damage to each other creature with flying.
5 /
3
{4}{R}{R}
Hellkite Tyrant
Creature - Dragon
Flying, trample
Whenever Hellkite Tyrant deals combat damage to a player, gain control of all artifacts that player controls.
At the beginning of your upkeep, if you control twenty or more artifacts, you win the game.
6 /
5
--
Highland Forest
Snow Land - Mountain Forest
({T}: Add {R} or {G}.)
Highland Forest enters the battlefield tapped.
--
Highland Weald
Snow Land
Highland Weald enters the battlefield tapped.
{T}: Add {R} or {G}.
{3}{R}
Hoarding Ogre
Creature - Ogre
Whenever Hoarding Ogre attacks, roll a d20.
1--9 | Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
10--19 | Create two Treasure tokens.
20 | Create three Treasure tokens.
3 /
3
{4}
Iron Mastiff
Artifact Creature - Dog
Whenever Iron Mastiff attacks, roll a d20 for each player being attacked and ignore all but the highest roll.
1--9 | Iron Mastiff deals damage equal to its power to you.
10--19 | Iron Mastiff deals damage equal to its power to defending player.
20 | Iron Mastiff deals damage equal to its power to each opponent.
4 /
4
{X}{R}{R}{G}
Klauth's Will
Instant
Choose one. If you control a commander as you cast this spell, you may choose both.
• Breathe Flame -- Klauth's Will deals X damage to each creature without flying.
• Smash Relics -- Destroy up to X target artifacts and/or enchantments.
{5}{R}{G}
Klauth, Unrivaled Ancient
Legendary Creature - Dragon
Flying, haste
Whenever Klauth, Unrivaled Ancient attacks, add X mana in any combination of colors, where X is the total power of attacking creatures. Spend this mana only to cast spells. Until end of turn, you don't lose this mana as steps and phases end.
4 /
4
{2}{G}
Kodama's Reach
Sorcery - Arcane
Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.
{2}{G}
Krosan Grip
Instant
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Destroy target artifact or enchantment.
{3}{G}{G}
Loathsome Troll
Creature - Troll
{3}{G}: Roll a d20. Activate only if Loathsome Troll is in your graveyard.
1--9 | Put Loathsome Troll on top of your library.
10--19 | Return Loathsome Troll to your hand.
20 | Return Loathsome Troll to the battlefield tapped.
6 /
2
{1}{R}{R}
Maddening Hex
Enchantment - Aura Curse
Enchant player
Whenever enchanted player casts a noncreature spell, roll a d6. Maddening Hex deals damage to that player equal to the result. Then attach Maddening Hex to another one of your opponents chosen at random.
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
{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
{3}{G}{G}
Regenesis
Instant
Return up to two target permanent cards from your graveyard to your hand.
{4}{G}{G}
Rishkar's Expertise
Sorcery
Draw cards equal to the greatest power among creatures you control.
You may cast a spell with mana value 5 or less from your hand without paying its mana cost.
{3}{G}{G}
Shared Summons
Instant
Search your library for up to two creature cards with different names, reveal them, put them into your hand, then shuffle.
{5}{R}{R}
Skyline Despot
Creature - Dragon
Flying
When Skyline Despot enters the battlefield, you become the monarch.
At the beginning of your upkeep, if you're the monarch, create a 5/5 red Dragon creature token with flying.
5 /
5
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{4}
Solemn Simulacrum
Artifact Creature - Golem
When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
When Solemn Simulacrum dies, you may draw a card.
2 /
2
{3}{G}{G}
Song of Inspiration
Instant
Choose up to two target permanent cards in your graveyard. Roll a d20 and add the total mana value of those cards.
1--14 | Return those cards to your hand.
15+ | Return those cards to your hand. You gain life equal to their total mana value.
{2}
Sword of Hours
Artifact - Equipment
Whenever equipped creature attacks, put a +1/+1 counter on it.
Whenever equipped creature deals combat damage, roll a d12. If the result is greater than the damage dealt or the result is 12, double the number of +1/+1 counters on that creature.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)
{2}{G}
Sylvan Shepherd
Creature - Human Druid
Vigilance
Whenever Sylvan Shepherd attacks, roll a d20.
1--9 | You gain 1 life.
10--19 | You gain 2 life.
20 | You gain 5 life.
2 /
3
{5}{R}{R}
Terror of Mount Velus
Creature - Dragon
Flying, double strike
When Terror of Mount Velus enters the battlefield, creatures you control gain double strike until end of turn.
5 /
5
{3}{R}{R}
Terror of the Peaks
Creature - Dragon
Flying
Spells your opponents cast that target Terror of the Peaks cost an additional 3 life to cast.
Whenever another creature enters the battlefield under your control, Terror of the Peaks deals damage equal to that creature's power to any target.
5 /
4
{5}
The Deck of Many Things
Legendary Artifact
{2}, {T}: Roll a d20 and subtract the number of cards in your hand. If the result is 0 or less, discard your hand.
1--9 | Return a card at random from your graveyard to your hand.
10--19 | Draw two cards.
20 | Put a creature card from any graveyard onto the battlefield under your control. When that creature dies, its owner loses the game.
{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
{6}{R}{R}
Utvara Hellkite
Creature - Dragon
Flying
Whenever a Dragon you control attacks, create a 6/6 red Dragon creature token with flying.
6 /
6
{4}{G}{G}
Wild Endeavor
Sorcery
Roll two d4 and choose one result. Create a number of 3/3 green Beast creature tokens equal to that result. Then search your library for a number of basic land cards equal to the other result, put them onto the battlefield tapped, then shuffle.
{3}{R}{G}
Wulfgar of Icewind Dale
Legendary Creature - Human Barbarian
Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)
If a creature you control attacking causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
4 /
4
{2}{R}
Wyll's Reversal
Instant
Choose target spell or ability with one or more targets. Roll a d20 and add the greatest power among creatures you control.
1--14 | You may choose new targets for that spell or ability.
15+ | You may choose new targets for that spell or ability. Then copy it. You may choose new targets for the copy.
{1}{R}
Wyll, Blade of Frontiers
Legendary Creature - Human Warlock
If you would roll one or more dice, instead roll that many dice plus one and ignore the lowest roll.
Whenever you roll one or more dice, put a +1/+1 counter on Wyll, Blade of Frontiers.
Choose a Background (You can have a Background as a second commander.)
1 /
1
{3}{R}{G}
Vrondiss, Rage of Ancients
Legendary Creature - Dragon Barbarian
Enrage -- Whenever Vrondiss, Rage of Ancients is dealt damage, you may create a 5/4 red and green Dragon Spirit creature token with "When this creature deals damage, sacrifice it."
Whenever you roll one or more dice, you may have Vrondiss deal 1 damage to itself.