{T}: Add {C}. Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

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

({T}: Add {R}.) This land enters tapped unless you control three or more other Mountains. When this land enters untapped, create a 1/1 red Dwarf creature token.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

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

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}.

Mines of Moria enters tapped unless you control a legendary creature. {T}: Add {R}. {3}{R}, {T}, Exile three cards from your graveyard: Create two Treasure tokens.

({T}: Add {R}.)

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

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

This land enters tapped unless a player has 13 or less life. {T}: Add {B} or {R}.

{1}, {T}: Add {B}{R}.

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

{T}: Add {R}. Channel — {3}{R}, Discard this card: Create two 1/1 colorless Spirit creature tokens. They gain haste until end of turn. This ability costs {1} less to activate for each legendary creature you control.

({T}: Add {B}.)

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

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}.

{T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

When this creature enters, create a number of 1/1 black Rat creature tokens equal to the number of opponents you have. {1}{B}, Sacrifice a creature: Target creature gets -2/-2 until end of turn.

Whenever you cast a creature spell, create X 1/1 black Thrull creature tokens, where X is that spell's mana value. When you control seven or more Thrulls, sacrifice Endrek Sahr.

Whenever Krenko attacks, put a +1/+1 counter on it, then create a number of 1/1 red Goblin creature tokens equal to Krenko's power.

At the beginning of combat on your turn, create a 2/1 red Elemental creature token with trample and haste. Sacrifice it at the beginning of the next end step. {T}: Search your library for a card, put it into your hand, then shuffle. Activate only if five or more creatures died this turn.

Haste Lieutenant — At the beginning of combat on your turn, if you control your commander, create a 1/1 colorless Thopter artifact creature token with flying. That token gains haste until end of turn.

Echo {1}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When this creature enters or dies, create a 1/1 red Goblin creature token.

Whenever another nontoken creature dies, you may create a 1/1 black Rat creature token. Rats you control have deathtouch.

When this creature enters, create three 1/1 red Goblin creature tokens. {1}{R}, Sacrifice a Goblin: This creature deals 2 damage to any target.

Whenever one or more artifacts you control enter, this creature deals that much damage to each opponent.

Whenever an artifact you control enters, this creature deals 1 damage to each opponent.

(Gain the next level as a sorcery to add its ability.) When this Class enters, create two tapped Treasure tokens. {1}{R}: Level 2 Treasures you control have "{T}, Sacrifice this artifact: Add two mana of any one color." {4}{R}: Level 3 Whenever you cast a spell, if mana from a Treasure was spent to cast it, this Class deals damage equal to that spell's mana value to each opponent.

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

When this creature enters, create three 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this token: Add {C}."

{T}, Sacrifice this creature: Add {C}{C}. If that mana is spent on a creature spell, it gains haste until end of turn. (That creature can attack and {T} as soon as it comes under your control.)

When this creature dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.") Encore {3}{R} ({3}{R}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

When Kalain enters, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.") Other creatures you control enter with an additional +1/+1 counter on them for each mana from a Treasure spent to cast them.

Whenever another creature you control dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

When this enchantment enters, create two Treasure tokens. The first spell you cast each turn that mana from a Treasure was spent to cast has cascade. (When you cast the spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

{1}, {T}: Add {B}{R}.

When this creature enters, you may sacrifice another creature you control. If you do, create a number of Treasure tokens equal to that creature's power. {2}{B}, Sacrifice X artifacts: Return target creature card with power X or less from your graveyard to the battlefield. X can't be 0.

As an additional cost to cast this spell, sacrifice a creature. Add an amount of {B} equal to the sacrificed creature's mana value.

{T}: Add {C}{C}.

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When this creature dies, you may draw a card.

Commander creatures you own have "Whenever an artifact or creature you control is put into a graveyard from the battlefield, each opponent loses 1 life."

When this enchantment enters, create a 1/1 white Human Soldier creature token. Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.

Whenever an artifact is put into a graveyard from the battlefield, you may have target opponent lose 1 life.

Fabricate 3 (When this creature enters, put three +1/+1 counters on it or create three 1/1 colorless Servo artifact creature tokens.) Whenever an artifact you control is put into a graveyard from the battlefield, target opponent loses life equal to this creature's power.

Whenever a token you control leaves the battlefield, each opponent loses 1 life and you gain 1 life.

Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad deals 1 damage to each opponent. {1}{B}: Each player mills a card. (They each put the top card of their library into their graveyard.)

Return target creature card from your graveyard to the battlefield. Flashback—Sacrifice three creatures. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flying Whenever another nontoken creature you control dies, you may exile it. If you do, create a token that's a copy of that creature, except it's 1/1 and it's a Nightmare in addition to its other types.

This creature enters with eight revival counters on it if you cast it. When this creature dies, if it had a revival counter on it, return it to the battlefield with one fewer revival counter on it at the beginning of the next end step.

Return target nonlegendary creature card from your graveyard to the battlefield with a -1/-1 counter on it.

You may cast this spell as though it had flash if you pay {2} more to cast it. (You may cast it any time you could cast an instant.) Each player returns all creature cards from their graveyard to the battlefield.

Return target creature card with mana value 3 or less from your graveyard to the battlefield. Cycling {2} ({2}, Discard this card: Draw a card.)

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.")

{1}{B}, Sacrifice an artifact or creature: Draw a card.

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

Morph {B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) Whenever another nontoken creature you control dies, draw a card.

{1}{R}, {T}, Sacrifice this creature: Each player discards their hand, then draws seven cards.

Whenever one or more other creatures die, draw a card. This ability triggers only once each turn.

As an additional cost to cast this spell, you may sacrifice one or more creatures. When you do, copy this spell for each creature sacrificed this way. You draw a card and you lose 1 life.

{T}, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature of their choice. You add {B}{B} and draw a card.

Flying, trample Whenever you sacrifice another creature, exile cards equal to its mana value from the top of target player's library. Until your next end step, you may play those cards, and mana of any type can be spent to cast those spells. Sacrifice another creature: Rakdos gains indestructible until end of turn. Tap it. Activate only once each turn.

{1}{B}, {T}, Sacrifice another creature: Draw X cards, where X is that creature's power. Choose a Background (You can have a Background as a second commander.)

When this creature enters, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.") {1}{B}, Sacrifice another creature or a Treasure: Draw a card.

Whenever this creature attacks, you may sacrifice another creature. If you do, draw a card and this creature can't be blocked this turn.

{1}{B}, Sacrifice a creature: You gain 1 life and draw a card.

As an additional cost to cast this spell, sacrifice a creature or enchantment. Exile target creature.

Hell to Pay deals X damage to target creature. Create a number of tapped Treasure tokens equal to the amount of excess damage dealt to that creature this way.

Destroy all creatures you don't control and all planeswalkers you don't control.

Whenever you sacrifice a permanent, put a +1/+1 counter on Juri. When Juri dies, it deals damage equal to its power to any target.

This creature can't block. Sacrifice a creature: Put a +1/+1 counter on this creature.

Sacrifice a creature: This enchantment deals 1 damage to any target.

Sacrifice a creature: Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Pay 1 life, Sacrifice another creature: Create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")