Mordor on the March — ruling 1

The token copies exactly what was printed on the original creature card and nothing else.

Mordor on the March — ruling 2

If the copied creature card has {X} in its mana cost, X is 0.

Mordor on the March — ruling 3

Any enters-the-battlefield abilities of the copied creature card will trigger when the token enters the battlefield. Any "as [this permanent] enters the battlefield" or "[this permanent] enters the battlefield with" abilities of the copied creature card will also work.

Mordor on the March — ruling 4

If another creature becomes a copy of, or enters the battlefield as, a copy of the token, that creature will copy the creature card the token is copying. However, the new copy won't gain haste and you won't exile it at the beginning of the next end step.

Mordor on the March — ruling 5

If Mordor on the March creates multiple tokens due to a replacement effect (such as the one Doubling Season creates), each of those tokens will gain haste, and you'll exile each of them at the beginning of the next end step.

Mordor on the March — ruling 6

The copies of Mordor on the March created by its storm ability are put directly onto the stack. They aren't cast and won't be counted by other spells with storm cast later in the turn.

Mordor on the March — ruling 7

Spells cast from zones other than a player's hand and spells that were countered or otherwise failed to resolve are still counted by the storm ability.

Mordor on the March — ruling 8

A copy of a spell can be countered like any other spell, but it must be countered individually. Countering a spell with storm won't affect the copies.

Mordor on the March : règles, fonctionnement et interactions (MTG)

Mordor on the March 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

Exile a creature card from your graveyard. Create a token that's a copy of it. It gains haste until end of turn. Exile it at the beginning of the next end step. Storm (When you cast this spell, copy it for each spell cast before it this turn.)

How it works : Mordor on the March

Original English text — Wizards of the Coast / Scryfall

#1November 3, 2023· Wizards of the Coast
The token copies exactly what was printed on the original creature card and nothing else.
No other card is named in this ruling.
#2November 3, 2023· Wizards of the Coast
If the copied creature card has in its mana cost, X is 0.
No other card is named in this ruling.
#3November 3, 2023· Wizards of the Coast
Any enters-the-battlefield abilities of the copied creature card will trigger when the token enters the battlefield. Any "as [this permanent] enters the battlefield" or "[this permanent] enters the battlefield with" abilities of the copied creature card will also work.
No other card is named in this ruling.
#4November 3, 2023· Wizards of the Coast
If another creature becomes a copy of, or enters the battlefield as, a copy of the token, that creature will copy the creature card the token is copying. However, the new copy won't gain haste and you won't exile it at the beginning of the next end step.
Card named in this ruling
Copy
#5November 3, 2023· Wizards of the Coast
If Mordor on the March creates multiple tokens due to a replacement effect (such as the one Doubling Season creates), each of those tokens will gain haste, and you'll exile each of them at the beginning of the next end step.
No other card is named in this ruling.
#6November 3, 2023· Wizards of the Coast
The copies of Mordor on the March created by its storm ability are put directly onto the stack. They aren't cast and won't be counted by other spells with storm cast later in the turn.
No other card is named in this ruling.
#7November 3, 2023· Wizards of the Coast
Spells cast from zones other than a player's hand and spells that were countered or otherwise failed to resolve are still counted by the storm ability.
No other card is named in this ruling.
#8November 3, 2023· Wizards of the Coast
A copy of a spell can be countered like any other spell, but it must be countered individually. Countering a spell with storm won't affect the copies.
Card named in this ruling
Copy