Betrayers of Kamigawa

You may exile a blue card with mana value X from your hand rather than pay this spell's mana cost. Counter target spell if its mana value is X.

Legendary creatures you control get +2/+2.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.) Soulshift 5 (When this creature dies, you may return tar...

Each player sacrifices a permanent of their choice.

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

Flying At the beginning of your upkeep, sacrifice Chisei unless you remove a counter from a permanent you control.

Sacrifice this creature: Target creature gets +1/+1 until end of turn.

As an additional cost to cast this spell, sacrifice a creature. Target creature gets -X/-X until end of turn, where X is the sacrificed creature's ...

Trample Soulshift 8 (When this creature dies, you may return target Spirit card with mana value 8 or less from your graveyard to your hand.)

Equipped creature has "Unattach Blinding Powder: Prevent all combat damage that would be dealt to this creature this turn." Equip {2} ({2}: Attach ...

Flash Enchant creature At the beginning of your upkeep, you lose 1 life. {0}: Regenerate enchanted creature.

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.

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature. {1}, Remove X ki counters from this creature: For each count...

Sacrifice this creature: Target player loses 1 life.

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this artifact. {2}, {T}, Remove a ki counter from this artifact: Create a 1...

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.

Haste This creature attacks each combat if able.

Whenever a land is put into a graveyard from the battlefield, this creature gets +1/+0 until end of turn.

When this creature dies, each player sacrifices a land of their choice.

Ninjutsu {3}{B} ({3}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)...

Whenever Ogre Marauder attacks, it gains "Ogre Marauder can't be blocked" until end of turn unless defending player sacrifices a creature.

Sacrifice Nezumi Shadow-Watcher: Destroy target Ninja.

Enchant creature You control enchanted creature. At the beginning of the end step, if you control no Demons, sacrifice Mark of the Oni.

Whenever you cast a Spirit or Arcane spell, target opponent exiles a card from their hand.