Leitmotif Composer — ruling 1

Leitmotif Composer's second ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack without resolving.

Leitmotif Composer — ruling 2

A spell's mana value is determined only by its mana cost. Ignore any alternative costs, additional costs, cost increases, or cost reductions.

Leitmotif Composer — ruling 3

For spells on the stack with {X} in their mana costs, use the value chosen for X to determine the spell's mana value.

Leitmotif Composer — ruling 4

The token copy will have Leitmotif Composer's ability and will be able to create copies of itself.

Leitmotif Composer — ruling 5

In the unusual case where Leitmotif Composer becomes a copy of something else while its triggered ability is on the stack but before it resolves, the token will enter as a copy of whatever Leitmotif Composer is copying.

Leitmotif Composer — ruling 6

The token doesn't copy whether Leitmotif Composer is tapped or untapped, whether it has any counters on it or Auras attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on.

Leitmotif Composer : règles, fonctionnement et interactions (MTG)

Leitmotif Composer 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

Whenever this creature deals combat damage to a player, draw a card. Whenever you cast an instant or sorcery spell with mana value 5 or greater, create a token that's a copy of this creature. : Creatures named Leitmotif Composer can't be blocked this turn.

How it works : Leitmotif Composer

Original English text — Wizards of the Coast / Scryfall

#1March 20, 2026· Wizards of the Coast
Leitmotif Composer's second ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack without resolving.
No other card is named in this ruling.
#2March 20, 2026· Wizards of the Coast
A spell's mana value is determined only by its mana cost. Ignore any alternative costs, additional costs, cost increases, or cost reductions.
No other card is named in this ruling.
#3March 20, 2026· Wizards of the Coast
For spells on the stack with in their mana costs, use the value chosen for X to determine the spell's mana value.
No other card is named in this ruling.
#4March 20, 2026· Wizards of the Coast
The token copy will have Leitmotif Composer's ability and will be able to create copies of itself.
Card named in this ruling
Copy
#5March 20, 2026· Wizards of the Coast
In the unusual case where Leitmotif Composer becomes a copy of something else while its triggered ability is on the stack but before it resolves, the token will enter as a copy of whatever Leitmotif Composer is copying.
Card named in this ruling
Copy
#6March 20, 2026· Wizards of the Coast
The token doesn't copy whether Leitmotif Composer is tapped or untapped, whether it has any counters on it or Auras attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on.
Card named in this ruling
Copy