Betrayers of Kamigawa

Mark of the Oni

Mark of the Oni {2}{B}

Enchantment - Aura
Enchant creature
You control enchanted creature.
At the beginning of the end step, if you control no Demons, sacrifice Mark of the Oni.
"As more oni walked Kamigawa, more darkness infested its inhabitants' souls."
—The History of Kamigawa
Nezumi Shadow-Watcher

Nezumi Shadow-Watcher {B}

Creature - Rat Warrior
Sacrifice Nezumi Shadow-Watcher: Destroy target Ninja.
"The Okiba Gang! Night-cursed thieves and assassins! I've had enough of their meddling! Triple the guard!"
—Marrow-Gnawer
1/1
Ogre Marauder

Ogre Marauder {1}{B}{B}

Creature - Ogre Warrior
Whenever Ogre Marauder attacks, it gains "Ogre Marauder can't be blocked" until end of turn unless defending player sacrifices a creature.
Once freed, the oni demanded more and more sacrifices to appease them. The ogres happily obliged.
3/1
Okiba-Gang Shinobi

Okiba-Gang Shinobi {3}{B}{B}

Creature - Rat Ninja
Ninjutsu {3}{B}
Whenever Okiba-Gang Shinobi deals combat damage to a player, that player discards two cards.
3/2
Patron of the Nezumi

Patron of the Nezumi {5}{B}{B}

Legendary Creature - Spirit
Rat offering
Whenever a permanent is put into an opponent's graveyard, that player loses 1 life.
6/6
Psychic Spear

Psychic Spear {B}

Sorcery
Target player reveals their hand. You choose a Spirit or Arcane card from it. That player discards that card.
"The wizards of Takenuma Swamp faced the horrors of humanity every day. It's no wonder they fared so well against the kami."
—Observations of the Kami War
Pus Kami

Pus Kami {5}{B}{B}

Creature - Spirit
{B}, Sacrifice Pus Kami: Destroy target nonblack creature.
Soulshift 6
3/3
Scourge of Numai

Scourge of Numai {3}{B}

Creature - Demon Spirit
At the beginning of your upkeep, you lose 2 life if you don't control an Ogre.
"Where a once-proud human city stood, only the ruins of Numai remain, deep amid rotting bamboo and plagued by oni."
—The History of Kamigawa
4/4
Shirei, Shizo's Caretaker

Shirei, Shizo's Caretaker {4}{B}

Legendary Creature - Spirit
Whenever a creature with power 1 or less is put into your graveyard from the battlefield, you may return that card to the battlefield at the beginning of the next end step if Shirei, Shizo's Caretaker is still on the battlefield.
2/2
Sickening Shoal

Sickening Shoal {X}{B}{B}

Instant - Arcane
You may exile a black card with mana value X from your hand rather than pay this spell's mana cost.
Target creature gets -X/-X until end of turn.
Skullmane Baku

Skullmane Baku {3}{B}{B}

Creature - Spirit
Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Skullmane Baku.
{1}, {T}, Remove X ki counters from Skullmane Baku: Target creature gets -X/-X until end of turn.
2/1
Skullsnatcher

Skullsnatcher {1}{B}

Creature - Rat Ninja
Ninjutsu {B}
Whenever Skullsnatcher deals combat damage to a player, exile up to two target cards from that player's graveyard.
2/1
Stir the Grave

Stir the Grave {X}{B}

Sorcery
Return target creature card with mana value X or less from your graveyard to the battlefield.
"Your lungs may not draw breath, but while your hands can grip a sword, you will be useful to me."
—Nighteyes, nezumi necromancer
Takenuma Bleeder

Takenuma Bleeder {2}{B}

Creature - Ogre Shaman
Whenever Takenuma Bleeder attacks or blocks, you lose 1 life if you don't control a Demon.
"I prefer to weave my magic through oni blood, but yours will do in a pinch."
3/3
Three Tragedies

Three Tragedies {3}{B}{B}

Sorcery - Arcane
Target player discards three cards.
"As the kami passed over the village of Mita, the inhabitants relived their three most grievous tragedies. Some cried. Some raged. Some were driven to madness. But the next morning, none possessed the will to fight."
—Observations of the Kami War
Throat Slitter

Throat Slitter {4}{B}

Creature - Rat Ninja
Ninjutsu {2}{B}
Whenever Throat Slitter deals combat damage to a player, destroy target nonblack creature that player controls.
2/2
Toshiro Umezawa

Toshiro Umezawa {1}{B}{B}

Legendary Creature - Human Samurai
Bushido 1
Whenever a creature an opponent controls dies, you may cast target instant card from your graveyard. If that spell would be put into a graveyard, exile it instead.
2/2
Yukora, the Prisoner

Yukora, the Prisoner {2}{B}{B}

Legendary Creature - Demon Spirit
When Yukora, the Prisoner leaves the battlefield, sacrifice all non-Ogre creatures you control.
It took ninety-nine monks to weave the spell that trapped Yukora. Upon the death of the ninety-nine, the spell was broken, and the demon returned to the mortal world seeking vengeance for its imprisonment.
5/5
Akki Blizzard-Herder

Akki Blizzard-Herder {1}{R}

Creature - Goblin Shaman
When Akki Blizzard-Herder dies, each player sacrifices a land.
"It remains unclear whether the akki shamans could in fact create storms or simply predicted them."
—The History of Kamigawa
1/1
Akki Raider

Akki Raider {1}{R}

Creature - Goblin Warrior
Whenever a land is put into a graveyard from the battlefield, Akki Raider gets +1/+0 until end of turn.
Akki were very territorial, attacking and destroying any settlements that came too close to their mountain homes. The more successful their raids, the bolder they became.
2/1
Ashen Monstrosity

Ashen Monstrosity {5}{R}{R}

Creature - Spirit
Haste
Ashen Monstrosity attacks each combat if able.
There was a dull thunder at the vanguard, then shocked cries in the midst of the column. Moments later, Takada, last of the rearguard, faced the kami alone.
7/4
Aura Barbs

Aura Barbs {2}{R}

Instant - Arcane
Each enchantment deals 2 damage to its controller, then each Aura attached to a creature deals 2 damage to the creature it's attached to.
Blademane Baku

Blademane Baku {1}{R}

Creature - Spirit
Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Blademane Baku.
{1}, Remove X ki counters from Blademane Baku: For each counter removed, Blademane Baku gets +2/+0 until end of turn.
1/1
Blazing Shoal

Blazing Shoal {X}{R}{R}

Instant - Arcane
You may exile a red card with mana value X from your hand rather than pay this spell's mana cost.
Target creature gets +X/+0 until end of turn.
Clash of Realities

Clash of Realities {3}{R}

Enchantment
All Spirits have "When this permanent enters the battlefield, you may have it deal 3 damage to target non-Spirit creature."
Non-Spirit creatures have "When this creature enters the battlefield, you may have it deal 3 damage to target Spirit creature."