Kazuul's Fury // Kazuul's Cliffs — ruling 1

The sacrificed creature's last known existence on the battlefield is checked to determine its power.

Kazuul's Fury // Kazuul's Cliffs — ruling 2

You must sacrifice exactly one creature to cast Kazuul's Fury; you can't cast it without sacrificing a creature, and you can't sacrifice additional creatures.

Kazuul's Fury // Kazuul's Cliffs — ruling 3

Players can respond only once this spell has been cast and all its costs have been paid. No one can try to interfere with the creature you sacrificed to prevent you from casting this spell.

Kazuul's Fury // Kazuul's Cliffs — ruling 4

There is a single triangle icon in the top left corner of the front face. There is a double triangle icon in the top left corner of the back face.

Kazuul's Fury // Kazuul's Cliffs — ruling 5

To determine whether it is legal to play a modal double-faced card, consider only the characteristics of the face you're playing and ignore the other face's characteristics.

Kazuul's Fury // Kazuul's Cliffs — ruling 6

If an effect allows you to play a specific modal double-faced card, you may cast it as a spell or play it as a land, as determined by which face you choose to play. If an effect allows you to cast (rather than "play") a specific modal double-faced card, you can't play it as a land.

Kazuul's Fury // Kazuul's Cliffs — ruling 7

If an effect allows you to play a land or cast a spell from among a group of cards, you may play or cast a modal double-faced card with any face that fits the criteria of that effect.

Kazuul's Fury // Kazuul's Cliffs — ruling 8

The mana value of a modal double-faced card is based on the characteristics of the face that's being considered. On the stack and battlefield, consider whichever face is up. In all other zones, consider only the front face. This is different than how the mana value of a transforming double-faced card is determined.

Kazuul's Fury // Kazuul's Cliffs : règles, fonctionnement et interactions (MTG)

Kazuul's Fury // Kazuul's Cliffs is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

As an additional cost to cast this spell, sacrifice a creature. Kazuul's Fury deals damage equal to the sacrificed creature's power to any target. This land enters tapped. : Add .

Complete guide

Kazuul's Fury is a versatile modal double-faced card that serves as both a high-impact removal spell or finisher and a reliable land source. By sacrificing a creature, you can turn its power into direct damage against any target, making it a staple for decks that utilize high-power creatures. Because it can be played as Kazuul's Cliffs, it ensures you never miss a land drop while holding a powerful effect in reserve.

Understanding the Sacrifice Cost

Kazuul's Fury requires you to sacrifice a creature as an additional cost to cast the spell. This means the sacrifice happens at the moment you put the spell on the stack, before any player can respond. Because the cost is paid immediately, opponents cannot use removal to kill your creature in response to prevent the sacrifice; by the time they can act, the creature is already in the graveyard and the spell is officially cast.

Determining Damage and Resolution

When Kazuul's Fury resolves, it checks the last known information of the sacrificed creature to determine its power. This includes any counters or continuous effects that were modifying its power at the moment it was sacrificed. If the target chosen for the spell becomes illegal before resolution (for example, if it gains Hexproof), the spell is fumbled and deals no damage. However, the sacrificed creature remains in the graveyard regardless of whether the damage is successfully dealt.

Modal Double-Faced Card Rules

As a modal double-faced card, Kazuul's Fury has specific interactions with other effects. In your hand, library, or graveyard, it is treated only as the front face (the Instant). You can only play the back face, Kazuul's Cliffs, if an effect specifically allows you to 'play' a land or 'play' a card. If an effect says you may 'cast' a spell from your graveyard or library, you cannot choose to play the land side.

When to Unleash the Fury

The best time to use Kazuul's Fury is in response to an opponent's removal spell. If they try to destroy your largest creature, you can cast Kazuul's Fury in response, sacrificing that creature to deal damage before their spell resolves. It also acts as a powerful 'burn' spell to finish off an opponent who is at low life, especially after a successful combat phase where your creature has already dealt damage.

Interaction examples

Protecting Against Redirection

Deflecting Swat

If you cast Kazuul's Fury targeting an opponent, that opponent may cast Deflecting Swat to change the target of your spell. Note that they cannot change which creature was sacrificed, as that was a cost already paid. They can, however, redirect the damage to you or one of your permanents. Since Kazuul's Fury deals damage equal to the power of the creature you already sacrificed, the amount of damage remains the same regardless of the new target.

Interacting with Permanent Effects

Chaos Warp

If a player casts Chaos Warp on a permanent and reveals Kazuul's Fury // Kazuul's Cliffs from the top of their library, the card must enter the battlefield as its front face. However, since the front face is an Instant and not a permanent, it cannot be put onto the battlefield. The card simply remains in its owner's library or goes to the zone designated by the effect (usually staying in the library as it was not a permanent card).

Guide written with AI from the official text and rulings. Official English text prevails.

How it works : Kazuul's Fury // Kazuul's Cliffs

Original English text — Wizards of the Coast / Scryfall

#1September 25, 2020· Wizards of the Coast
The sacrificed creature's last known existence on the battlefield is checked to determine its power.
No other card is named in this ruling.
#2September 25, 2020· Wizards of the Coast
You must sacrifice exactly one creature to cast Kazuul's Fury; you can't cast it without sacrificing a creature, and you can't sacrifice additional creatures.
No other card is named in this ruling.
#3September 25, 2020· Wizards of the Coast
Players can respond only once this spell has been cast and all its costs have been paid. No one can try to interfere with the creature you sacrificed to prevent you from casting this spell.
No other card is named in this ruling.
#4September 25, 2020· Wizards of the Coast
There is a single triangle icon in the top left corner of the front face. There is a double triangle icon in the top left corner of the back face.
No other card is named in this ruling.
#5September 25, 2020· Wizards of the Coast
To determine whether it is legal to play a modal double-faced card, consider only the characteristics of the face you're playing and ignore the other face's characteristics.
No other card is named in this ruling.
#6September 25, 2020· Wizards of the Coast
If an effect allows you to play a specific modal double-faced card, you may cast it as a spell or play it as a land, as determined by which face you choose to play. If an effect allows you to cast (rather than "play") a specific modal double-faced card, you can't play it as a land.
No other card is named in this ruling.
#7September 25, 2020· Wizards of the Coast
If an effect allows you to play a land or cast a spell from among a group of cards, you may play or cast a modal double-faced card with any face that fits the criteria of that effect.
No other card is named in this ruling.
#8September 25, 2020· Wizards of the Coast
The mana value of a modal double-faced card is based on the characteristics of the face that's being considered. On the stack and battlefield, consider whichever face is up. In all other zones, consider only the front face. This is different than how the mana value of a transforming double-faced card is determined.
No other card is named in this ruling.
#9September 25, 2020· Wizards of the Coast
A modal double-faced card can't be transformed or be put onto the battlefield transformed. Ignore any instruction to transform a modal double-faced card or to put one onto the battlefield transformed.
No other card is named in this ruling.
#10September 25, 2020· Wizards of the Coast
If an effect puts a double-faced card onto the battlefield, it enters with its front face up. If that front face can't be put onto the battlefield, it doesn't enter the battlefield.
No other card is named in this ruling.
#11September 25, 2020· Wizards of the Coast
If an effect instructs a player to choose a card name, the name of either face may be chosen. If that effect or a linked ability refers to a spell with the chosen name being cast and/or a land with the chosen name being played, it considers only the chosen name, not the other face's name.
No other card is named in this ruling.
#12September 25, 2020· Wizards of the Coast
In the Commander variant, a double-faced card's color identity is determined by the mana costs and mana symbols in the rules text of both faces combined. If either face has a color indicator or basic land type, those are also considered.
No other card is named in this ruling.