Rohgahh, Kher Keep Overlord

Other Kobolds you control get +2/+2.
Whenever you cast a Kobold spell, you may pay {2}. If you do, create a 4/4 red Dragon creature token with flying.
Whenever you cast a Dragon spell, create a 0/1 red Kobold creature token named Kobolds of Kher Keep.

Realmbreaker, the Invasion Tree

{2}, {T}: Target opponent mills three cards. Put a land card from their graveyard onto the battlefield tapped under your control. It gains "If this land would leave the battlefield, exile it instead of putting it anywhere else."
{10}, {T}, Sacrifice Realmbreaker: Search your library for any number of Praetor cards, put them onto the battlefield, then shuffle.

Pardic Collaborator

First strike
{B}: This creature gets +1/+1 until end of turn.

Body Dropper

Whenever you sacrifice another creature, put a +1/+1 counter on this creature.
{B}{R}, Sacrifice another creature: This creature gains menace until end of turn. (It can't be blocked except by two or more creatures.)

Mountain

Tramway Station

This land enters tapped.
{T}: Add {B} or {R}.
{2}{B}{R}, {T}, Sacrifice this land: Draw a card.

Chaos Warp

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.

Rakdos Carnarium

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {B}{R}.

Carnage Gladiator

Whenever a creature blocks, that creature's controller loses 1 life.
{1}{B}{R}: Regenerate this creature.

Brawl-Bash Ogre

Menace (This creature can't be blocked except by two or more creatures.)
Whenever this creature attacks, you may sacrifice another creature. If you do, this creature gets +2/+2 until end of turn.

Goblin Deathraiders

Uncle Istvan

Prevent all damage that would be dealt to this creature by creatures.

Archetype of Aggression

Creatures you control have trample.
Creatures your opponents control lose trample and can't have or gain trample.

Canyon Slough

({T}: Add {B} or {R}.)
This land enters tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)

Feed the Swarm

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

Tymaret, the Murder King

{1}{R}, Sacrifice another creature: Tymaret deals 2 damage to target player or planeswalker.
{1}{B}, Sacrifice a creature: Return this card from your graveyard to your hand.

Garna, Bloodfist of Keld

Whenever another creature you control dies, draw a card if it was attacking. Otherwise, Garna deals 1 damage to each opponent.

Murder

Arcane Signet

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

Sol Ring

Blackcleave Cliffs

This land enters tapped unless you control two or fewer other lands.
{T}: Add {B} or {R}.

Shivan Zombie

Fellwar Stone

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

Rakdos Ringleader

First strike
Whenever this creature deals combat damage to a player, that player discards a card at random.
{B}: Regenerate this creature.

Tainted Peak

{T}: Add {C}.
{T}: Add {B} or {R}. Activate only if you control a Swamp.

Vial Smasher the Fierce

Whenever you cast your first spell each turn, choose an opponent at random. Vial Smasher deals damage equal to that spell's mana value to that player or a planeswalker that player controls.
Partner (You can have two commanders if both have partner.)

Shadowblood Ridge

Rakdos Signet

Garna, the Bloodflame

Flash
When Garna enters, return to your hand all creature cards in your graveyard that were put there from anywhere this turn.
Other creatures you control have haste.

Smoldering Marsh

({T}: Add {B} or {R}.)
This land enters tapped unless you control two or more basic lands.

Stormclaw Rager

{1}, Sacrifice another creature or artifact: Put a +1/+1 counter on this creature and draw a card. Activate only as a sorcery.

Bloodfell Caves

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {B} or {R}.

Haunted Ridge

This land enters tapped unless you control two or more other lands.
{T}: Add {B} or {R}.

Rakdos Shred-Freak

Dreadhorde Butcher

Haste
Whenever this creature deals combat damage to a player or planeswalker, put a +1/+1 counter on this creature.
When this creature dies, it deals damage equal to its power to any target.

Temple of Malice

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
{T}: Add {B} or {R}.

Deadly Dispute

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

You Are Already Dead

Destroy target creature that was dealt damage this turn.
Draw a card.

Rushblade Commander

Geothermal Bog

({T}: Add {B} or {R}.)
This land enters tapped.

Jagged Poppet

Whenever this creature is dealt damage, discard that many cards.
Hellbent — Whenever this creature deals combat damage to a player, if you have no cards in hand, that player discards cards equal to the damage.

Pestilent Kathari

Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
{2}{R}: This creature gains first strike until end of turn.

Jagged Barrens

This land enters tapped.
When this land enters, it deals 1 damage to target opponent.
{T}: Add {B} or {R}.

Foreboding Ruins

As this land enters, you may reveal a Swamp or Mountain card from your hand. If you don't, this land enters tapped.
{T}: Add {B} or {R}.

Bloodline Pretender

Changeling (This card is every creature type.)
As this creature enters, choose a creature type.
Whenever another creature you control of the chosen type enters, put a +1/+1 counter on this creature.

Lovisa Coldeyes

Each creature that's a Barbarian, a Warrior, or a Berserker gets +2/+2 and has haste.

Phyrexian Arena

At the beginning of your upkeep, you draw a card and you lose 1 life.

Path of Ancestry

This land enters 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.)

Sethron, Hurloon General

Whenever Sethron or another nontoken Minotaur you control enters, create a 2/3 red Minotaur creature token.
{2}{B/R}: Minotaurs you control get +1/+0 and gain menace and haste until end of turn. ({B/R} can be paid with either {B} or {R}.)

Swamp

Command Tower

Blood-Chin Rager

Whenever this creature attacks, Warrior creatures you control gain menace until end of turn. (They can't be blocked except by two or more creatures.)

Rakdos Guildgate

This land enters tapped.
{T}: Add {B} or {R}.

Spike Jester

Merciless Javelineer

{2}, Discard a card: Put a -1/-1 counter on target creature. That creature can't block this turn.

Lucius the Eternal

Haste
Armour of Shrieking Souls — When Lucius the Eternal dies, exile it and choose target creature an opponent controls. When that creature leaves the battlefield, return this card from exile to the battlefield under its owner's control.

Kragma Warcaller

Minotaur creatures you control have haste.
Whenever a Minotaur you control attacks, it gets +2/+0 until end of turn.

Dragonskull Summit

This land enters tapped unless you control a Swamp or a Mountain.
{T}: Add {B} or {R}.

Barktooth Warbeard

Great Furnace

Possessed Barbarian

First strike
Threshold — As long as seven or more cards are in your graveyard, this creature gets +1/+1, is black, and has "{2}{B}, {T}: Destroy target red creature."

Deathbellow Raider

This creature attacks each combat if able.
{2}{B}: Regenerate this creature.

Balduvian Atrocity

Kicker {R} (You may pay an additional {R} as you cast this spell.)
Menace
When this creature enters, if it was kicked, return target creature card with mana value 3 or less from your graveyard to the battlefield. It gains haste. Sacrifice it at the beginning of the next end step.

Kill-Suit Cultist

This creature attacks each combat if able.
{B}, Sacrifice this creature: The next time damage would be dealt to target creature this turn, destroy that creature instead.

Emberstrike Duo

Whenever you cast a black spell, this creature gets +1/+1 until end of turn.
Whenever you cast a red spell, this creature gains first strike until end of turn.

Ashenmoor Gouger

Charcoal Diamond

This artifact enters tapped.
{T}: Add {B}.

Shizo, Death's Storehouse

{T}: Add {B}.
{B}, {T}: Target legendary creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Akoum Refuge

Drossforge Bridge

This land enters tapped.
Indestructible
{T}: Add {B} or {R}.

Mindblade Render

Whenever your opponents are dealt combat damage, if any of that damage was dealt by a Warrior, you draw a card and you lose 1 life.

Commander's Sphere

{T}: Add one mana of any color in your commander's color identity.
Sacrifice this artifact: Draw a card.

Fire Diamond

This artifact enters tapped.
{T}: Add {R}.

Sonorous Howlbonder

Menace
Each creature you control with menace can't be blocked except by three or more creatures.

Sulfurous Springs

{T}: Add {C}.
{T}: Add {B} or {R}. This land deals 1 damage to you.

Death-Greeter's Champion

Dash {3}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)
Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)
Double strike

Obsidian Battle-Axe

Equipped creature gets +2/+1 and has haste.
Whenever a Warrior creature enters, you may attach this Equipment to it.
Equip {3}

Torbran, Thane of Red Fell

If a red source you control would deal damage to an opponent or a permanent an opponent controls, it deals that much damage plus 2 instead.

Forge Boss

Whenever you sacrifice one or more other creatures, this creature deals 2 damage to each opponent. This ability triggers only once each turn.

Blood-Chin Fanatic

{1}{B}, Sacrifice another Warrior creature: Target player loses X life and you gain X life, where X is the sacrificed creature's power.

Forgotten Cave

This land enters tapped.
{T}: Add {R}.
Cycling {R} ({R}, Discard this card: Draw a card.)

Ogre Siegebreaker

{2}{B}{R}: Destroy target creature that was dealt damage this turn.

Conspiracy

As this enchantment enters, choose a creature type.
Creatures you control are the chosen type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

Talisman of Indulgence

{T}: Add {C}.
{T}: Add {B} or {R}. This artifact deals 1 damage to you.

Azra Oddsmaker

At the beginning of combat on your turn, you may discard a card. If you do, choose a creature. Whenever that creature deals combat damage to a player this turn, you draw two cards.

Kardur, Doomscourge

When Kardur enters, until your next turn, creatures your opponents control attack each combat if able and attack a player other than you if able.
Whenever an attacking creature dies, each opponent loses 1 life and you gain 1 life.

Hellhole Flailer

Unleash (You may have this creature enter with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)
{2}{B}{R}, Sacrifice this creature: It deals damage equal to its power to target player or planeswalker.

Rakdos Roustabout

Whenever this creature becomes blocked, it deals 1 damage to the player or planeswalker it's attacking.

Greven, Predator Captain

Menace
Greven gets +X/+0, where X is the amount of life you've lost this turn.
Whenever Greven attacks, you may sacrifice another creature. If you do, you draw cards equal to that creature's power and you lose life equal to that creature's toughness.

Cinder Barrens

Neheb, the Worthy

First strike
Other Minotaurs you control have first strike.
As long as you have one or fewer cards in hand, Minotaurs you control get +2/+0.
Whenever Neheb deals combat damage to a player, each player discards a card.

Barren Moor

This land enters tapped.
{T}: Add {B}.
Cycling {B} ({B}, Discard this card: Draw a card.)