Kefnet's Monument — ruling 1

The triggered ability of Kefnet's Monument doesn't tap the creature. It can target any creature, tapped or untapped. If that creature is already untapped at the beginning of its controller's next untap step, the effect won't do anything.

Kefnet's Monument — ruling 2

Each Monument has one ability that reduces the cost of creature spells of a certain color, and a triggered ability that triggers whenever you cast any creature spell—not just a creature spell of that color.

Kefnet's Monument — ruling 3

A creature spell that's multiple colors is each of those colors. For example, Ahn-Crop Champion is a white creature and a green creature, so it can benefit from either Oketra's Monument or Rhonas's Monument—or both at once.

Kefnet's Monument — ruling 4

To determine the total cost of a creature spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions. The mana value of the creature remains unchanged, no matter what the total cost to cast it was.

Kefnet's Monument — ruling 5

Each Monument's triggered ability triggers as the creature spell is cast and resolves before that creature spell resolves. The ability will resolve even if that creature spell is countered.

Kefnet's Monument : règles, fonctionnement et interactions (MTG)

Kefnet's Monument 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

Blue creature spells you cast cost less to cast. Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step.

Complete guide

Kefnet's Monument is a powerful legendary artifact that provides both mana efficiency and board control for creature-based decks. By reducing the cost of blue creatures and freezing your opponents' blockers, it ensures you stay ahead of the curve while slowing down the opposition. Whether you are playing a mono-blue tempo deck or a multi-colored aggressive strategy, this monument is a cornerstone for maintaining momentum.

Mana Reduction and Timing

The first ability of Kefnet's Monument reduces the cost of blue creature spells you cast by {1}. This reduction applies to the total cost after any increases but does not change the mana value of the card itself. Importantly, the second ability triggers whenever you cast *any* creature spell, not just blue ones. This triggered ability goes on the stack on top of the creature spell you just cast, meaning the 'freeze' effect will resolve before the creature that caused it even enters the battlefield.

The Freeze Effect Explained

When the triggered ability resolves, you choose a target creature an opponent controls. That creature will not untap during its controller's next untap step. It is crucial to remember that this ability does not tap the creature itself; it only prevents it from untapping if it is already tapped. You can target a creature that is already untapped, but the effect will simply do nothing when that player's untap step arrives unless that creature becomes tapped in the meantime.

Strategic Considerations

Because the ability triggers on casting, it is independent of the creature spell's success. If your opponent counters your creature spell, the Monument's trigger still resolves and the target will stay tapped. This makes it an excellent tool for pushing through damage, as you can reliably neutralize a blocker even if your opponent has a counterspell ready for your creature.

Interaction examples

Cost Reduction Mechanics

Arcane Signet

If you have Kefnet's Monument on the battlefield, any blue creature spells you cast will cost {1} less. While Arcane Signet is an artifact and does not receive a discount, the mana produced by the Signet can be used to pay for the remaining costs of your discounted blue creatures.

Targeting and Protection

Swiftfoot Boots

If your opponent has a creature equipped with Swiftfoot Boots, it has hexproof and cannot be chosen as the target for Kefnet's Monument's triggered ability. You must choose a different creature an opponent controls that does not have hexproof or shroud to apply the freeze effect.

Cast Trigger vs. Resolution

When you cast a creature spell, the Monument's ability triggers immediately. You target an opponent's tapped creature. Even if the opponent uses a spell to destroy Kefnet's Monument in response, the ability is already on the stack and will still resolve, ensuring that creature remains tapped during their next untap step.

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

How it works : Kefnet's Monument

Original English text — Wizards of the Coast / Scryfall

#1April 18, 2017· Wizards of the Coast
The triggered ability of Kefnet's Monument doesn't tap the creature. It can target any creature, tapped or untapped. If that creature is already untapped at the beginning of its controller's next untap step, the effect won't do anything.
No other card is named in this ruling.
#2April 18, 2017· Wizards of the Coast
Each Monument has one ability that reduces the cost of creature spells of a certain color, and a triggered ability that triggers whenever you cast any creature spell—not just a creature spell of that color.
No other card is named in this ruling.
#3April 18, 2017· Wizards of the Coast
A creature spell that's multiple colors is each of those colors. For example, Ahn-Crop Champion is a white creature and a green creature, so it can benefit from either Oketra's Monument or Rhonas's Monument—or both at once.
No other card is named in this ruling.
#4April 18, 2017· Wizards of the Coast
To determine the total cost of a creature spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions. The mana value of the creature remains unchanged, no matter what the total cost to cast it was.
No other card is named in this ruling.
#5April 18, 2017· Wizards of the Coast
Each Monument's triggered ability triggers as the creature spell is cast and resolves before that creature spell resolves. The ability will resolve even if that creature spell is countered.
No other card is named in this ruling.