The Masamune — ruling 1

An ability that triggers on an event that causes a creature to die doesn't trigger twice. For example, an ability that triggers "whenever you sacrifice a creature" triggers only once.

The Masamune — ruling 2

The trigger event doesn't have to specifically refer to "creatures." In these cases, the trigger event may also refer to something being "put into a graveyard from the battlefield." For example, if the equipped creature or an emblem you own has an ability that triggers "whenever an artifact is put into a graveyard from the battlefield," that ability would trigger twice if an artifact creature died.

The Masamune — ruling 3

The granted ability's effect doesn't copy the triggered ability; it just causes the ability to trigger twice. Any choices made as you put the ability onto the stack, such as modes and targets, are made separately for each instance of the ability. Any choices made on resolution, such as whether to pay a cost for that triggered ability, are also made separately.

The Masamune — ruling 4

An ability of the equipped creature or an emblem you own that triggers when a creature "leaves the battlefield" will trigger twice if that creature leaves the battlefield by dying.

The Masamune — ruling 5

If a creature dying at the same time as the equipped creature (including the equipped creature itself dying) causes a triggered ability of the equipped creature or an emblem you own to trigger, that ability triggers an additional time.

The Masamune — ruling 6

The granted ability affects the equipped creature's own "when this creature dies" triggered abilities as well as other triggered abilities of that creature or emblems you own that trigger when a creature dies. Such triggered abilities start with "when" or "whenever."

The Masamune — ruling 7

If you somehow control two of The Masamune and they're equipped to creatures you control, a creature dying causes abilities of emblems you own to trigger three times, not four. (If they're equipped to the same creature, the abilities of the equipped creature will also trigger three times.)

The Masamune — ruling 8

Look at each creature as it exists on the battlefield, taking into account continuous effects, to determine whether any triggered abilities will trigger multiple times. For example, if a land that has become a creature dies, an ability that triggers when it dies triggers twice.

The Masamune : règles, fonctionnement et interactions (MTG)

The Masamune 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 long as equipped creature is attacking, it has first strike and must be blocked if able. Equipped creature has "If a creature dying causes a triggered ability of this creature or an emblem you own to trigger, that ability triggers an additional time." Equip

Complete guide

The Masamune is a legendary equipment that turns its wielder into an unstoppable force on the battlefield while amplifying the rewards of death. Not only does it force your opponents into unfavorable combat trades, but it also doubles down on the value of every soul sent to the graveyard. Mastering this blade requires understanding how to maximize triggered abilities that respond to a creature's demise.

Unavoidable Combat

While the equipped creature is attacking, it gains two key abilities: first strike and a requirement to be blocked. This creates a lethal combination where your opponent is forced to sacrifice their blockers to your creature's first strike damage before they can even swing back. If an opponent has any legal blockers, they must assign at least one to the equipped creature, though they can choose which one if they have multiple options.

Doubling the Death Toll

The core of The Masamune is its ability to double triggered abilities that occur when a creature dies. This applies to abilities owned by the equipped creature itself or any emblems you own. It covers triggers that say 'whenever a creature dies,' 'whenever a creature is put into a graveyard from the battlefield,' or 'leaves the battlefield' (if that exit was caused by death). Importantly, if the equipped creature itself dies, its own 'death' triggers will still fire twice because the game looks back at the state of the board just before the event occurred.

Timing and Multiple Triggers

If you manage to equip multiple copies of The Masamune to the same creature (through specific non-legendary copy effects), the effect is additive, not multiplicative. Two copies will result in a death trigger firing three times total, not four. Furthermore, you make all choices for these triggers—like targets or paying optional costs—separately for each instance on the stack.

Common Mistakes to Avoid

The Masamune only doubles triggers specifically caused by a creature dying. It does not double triggers caused by sacrificing a creature (unless the ability specifically mentions death) or cards being discarded. Additionally, the ability only doubles triggers from the equipped creature or your emblems; it does not double death triggers from other creatures you control, artifacts, or enchantments unless those abilities are granted to the equipped creature.

Interaction examples

Standard Equipment Setup

Arcane Signet

Swiftfoot Boots

If you have a creature equipped with The Masamune and Swiftfoot Boots, and you use an Arcane Signet to pay for a spell that causes a creature to die, the Boots will protect your creature with hexproof while The Masamune ensures any 'death' triggers on that creature fire twice. Note that the Signet and Boots themselves do not have death triggers, so The Masamune does not interact with them directly, but they provide the protection and mana needed to maintain your board presence.

First Strike Lethality

You equip The Masamune to a 3/3 creature. When you move to the combat phase and declare it as an attacker, the creature gains first strike. Your opponent has a 3/1 creature. Because of The Masamune, the opponent must block your 3/3 if they are able. During the first strike damage step, your creature deals 3 damage to their 3/1, killing it before it can deal damage back. If your creature had an ability like 'Whenever a creature dies, you gain 1 life,' that ability would trigger twice, gaining you 2 life instead of 1.

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

How it works : The Masamune

Original English text — Wizards of the Coast / Scryfall

#1June 6, 2025· Wizards of the Coast
An ability that triggers on an event that causes a creature to die doesn't trigger twice. For example, an ability that triggers "whenever you sacrifice a creature" triggers only once.
No other card is named in this ruling.
#2June 6, 2025· Wizards of the Coast
The trigger event doesn't have to specifically refer to "creatures." In these cases, the trigger event may also refer to something being "put into a graveyard from the battlefield." For example, if the equipped creature or an emblem you own has an ability that triggers "whenever an artifact is put into a graveyard from the battlefield," that ability would trigger twice if an artifact creature died.
No other card is named in this ruling.
#3June 6, 2025· Wizards of the Coast
The granted ability's effect doesn't copy the triggered ability; it just causes the ability to trigger twice. Any choices made as you put the ability onto the stack, such as modes and targets, are made separately for each instance of the ability. Any choices made on resolution, such as whether to pay a cost for that triggered ability, are also made separately.
No other card is named in this ruling.
#4June 6, 2025· Wizards of the Coast
An ability of the equipped creature or an emblem you own that triggers when a creature "leaves the battlefield" will trigger twice if that creature leaves the battlefield by dying.
No other card is named in this ruling.
#5June 6, 2025· Wizards of the Coast
If a creature dying at the same time as the equipped creature (including the equipped creature itself dying) causes a triggered ability of the equipped creature or an emblem you own to trigger, that ability triggers an additional time.
No other card is named in this ruling.
#6June 6, 2025· Wizards of the Coast
The granted ability affects the equipped creature's own "when this creature dies" triggered abilities as well as other triggered abilities of that creature or emblems you own that trigger when a creature dies. Such triggered abilities start with "when" or "whenever."
No other card is named in this ruling.
#7June 6, 2025· Wizards of the Coast
If you somehow control two of The Masamune and they're equipped to creatures you control, a creature dying causes abilities of emblems you own to trigger three times, not four. (If they're equipped to the same creature, the abilities of the equipped creature will also trigger three times.)
No other card is named in this ruling.
#8June 6, 2025· Wizards of the Coast
Look at each creature as it exists on the battlefield, taking into account continuous effects, to determine whether any triggered abilities will trigger multiple times. For example, if a land that has become a creature dies, an ability that triggers when it dies triggers twice.
No other card is named in this ruling.