Black Sun's Twilight

Up to one target creature gets -X/-X until end of turn. If X is 5 or more, return a creature card with mana value X or less from your graveyard to the battlefield tapped.

Swamp

Wayfarer's Bauble

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

Duskwalker

Kicker {3}{B} (You may pay an additional {3}{B} as you cast this spell.)
If this creature was kicked, it enters with two +1/+1 counters on it and with fear. (It can't be blocked except by artifact creatures and/or black creatures.)

Shadowheart, Dark Justiciar

{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.)

Cruel Grimnarch

Deathtouch
When this creature enters, each opponent discards a card. For each opponent who can't, you gain 4 life.

Embalmed Brawler

Amplify 1 (As this creature enters, put a +1/+1 counter on it for each Zombie card you reveal in your hand.)
Whenever this creature attacks or blocks, you lose 1 life for each +1/+1 counter on it.

Disciple of the Vault

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

Charcoal Diamond

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

Whipstitched Zombie

At the beginning of your upkeep, sacrifice this creature unless you pay {B}.

Waste Away

As an additional cost to cast this spell, discard a card.
Target creature gets -5/-5 until end of turn.

Mass of Ghouls

Stronghold Assassin

{T}, Sacrifice a creature: Destroy target nonblack creature.

Agent of the Iron Throne

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."

Nakaya Shade

{B}: This creature gets +1/+1 until end of turn unless any player pays {2}.

Boneknitter

{1}{B}: Regenerate target Zombie.
Morph {2}{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.)

Festering Goblin

When this creature dies, target creature gets -1/-1 until end of turn.

Frightshroud Courier

You may choose not to untap this creature during your untap step.
{2}{B}, {T}: Target Zombie creature gets +2/+2 and has fear for as long as this creature remains tapped. (It can't be blocked except by artifact creatures and/or black creatures.)

Dark Supplicant

{T}, Sacrifice three Clerics: Search your graveyard, hand, and/or library for a card named Scion of Darkness and put it onto the battlefield. If you search your library this way, shuffle.

Haunted Cadaver

Whenever this creature deals combat damage to a player, you may sacrifice it. If you do, that player discards three cards.
Morph {1}{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.)

Dark Ritual

Decanter of Endless Water

You have no maximum hand size.
{T}: Add one mana of any color.

Viconia, Drow Apostate

At the beginning of your upkeep, if there are four or more creature cards in your graveyard, return a creature card at random from your graveyard to your hand.
Choose a Background (You can have a Background as a second commander.)

Raise Dead

Return target creature card from your graveyard to your hand.

Accursed Centaur

When this creature enters, sacrifice a creature.

Arcane Signet

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

Misery Charm

Choose one —
• Destroy target Cleric.
• Return target Cleric card from your graveyard to your hand.
• Target player loses 2 life.

Disciple of Malice

Protection from white
Cycling {2} ({2}, Discard this card: Draw a card.)

Undertaker

{B}, {T}, Discard a card: Return target creature card from your graveyard to your hand.

Gravedigger

When this creature enters, you may return target creature card from your graveyard to your hand.

Thought Vessel

You have no maximum hand size.
{T}: Add {C}.

Bonecaller Cleric

{3}{B}, Sacrifice this creature: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

Restless Dead

Liliana's Elite

This creature gets +1/+1 for each creature card in your graveyard.

Return to Battle

Headhunter

Whenever this creature deals combat damage to a player, that player discards a card.
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.)